HomeMy WebLinkAboutItem 8a - Grand Avenue Paving Project Study Session Item 8a
Department: Public Works
Cost Center: 5010
For Agenda of: 10/6/2026
Placement: Study Session
Estimated Time: 90 min
FROM: Aaron Floyd, Public Works & Utilities Director
Prepared By: Luke Schwartz, Transportation Manager
Dana Murray, Transportation Planner-Engineer
SUBJECT: GRAND AVENUE PAVING PROJECT STUDY SESSION
RECOMMENDATION
1. Receive an update on the Grand Avenue Paving Project; and
2. Provide feedback on the Preliminary Grand Avenue Paving Project Design Concepts.
REPORT-IN-BRIEF
Grand Avenue is scheduled for repaving in summer/fall of 2027 as part of the City’s
biennial recurring paving maintenance project. The 2027 Grand Avenue Paving Project
(the “Project”), which may also be referred to in other documents as the “2027 Paving
Project”, will combine essential maintenance elements (pavement reconstruction, ADA
curb ramp upgrades, and permanent roadway markings ) with additional safety and
complete streets improvements to support the City’s adopted safety and multimodal
transportation goals, as funding allows. The Project builds on the quick-build
improvements installed along Grand Avenue in late 2024/early 2025, which were
advanced as a temporary pilot project in response to a history of injury collisions, including
a fatal bicycle collision in 2023.
City staff monitored the Grand Avenue pilot project performance by reviewing pre- and
post-pilot traffic data, crash history, field observations, and feedback from key
stakeholders and community members. Overall, monitoring indicates that the pilot has
improved conditions for people walking and bicycling and has generally been supported
by community members who provided feedback. The monitoring also identified several
locations where additional refinements or improvements may be warranted.
The purpose of this study session is to (a) present the findings of the Grand Avenue Pilot
Project Performance Monitoring and (b) receive City Council direction regarding
preliminary design recommendations for the Project, which will be used to guide more
detailed project plans and specifications.
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POLICY CONTEXT
The Grand Avenue Paving Project is intended to advance essential road maintenance,
as guided by the City’s Pavement Management Plan, while also supporting the City’s
goals to advance road safety, multimodal transportation infrastructure, climate action and
sustainability objectives. The Project directly supports the City’s Major City Goal of
Infrastructure and Sustainable Transportation.
Active Transportation Plan Policy Context
The Grand Avenue corridor is identified as a Tier 2 (medium priority) project in the City’s
2021 Active Transportation Plan (ATP). The ATP calls for protected bike lanes on Grand
Avenue from Monterey Street to Slack Street, as well as minor bicycle and pedestrian
crossing improvements at the intersections of Grand/McCollum Street and Grand/Mill
Street. The ATP also identif ies potential for a major bicycle and pedestrian crossing
improvement at the Grand Avenue/Monterey Street intersection, with consideration for
dedicated bicycle/pedestrian signal phases and/or bicycle protected intersection features.
In addition, the ATP includes a priority action to continue implementing new streetlights,
prioritizing locations with higher pedestrian and bicycle activity or with a history of
crashes.
Vision Zero – Safe Streets Action Plan Recommendations
Grand Avenue is designated as part of the City’s High Injury Network per the City’s Vision
Zero - Safe Streets Action Plan (page 66). The High Injury Network comprises 11% of
City roadways where 80% of fatal and severe injuries have occurred. The Safe Streets
Action Plan identifies a range of street design recommendations aimed at improving
safety along Grand Avenue, including pursuing permanent improvements informed by the
Grand Avenue Pilot Project Monitoring Study and community input. Key
recommendations from the Action Plan include:
1. Explore strategies to reduce posted speed limits and increase visibility and
awareness of posted speed limits as allowed per the California Vehicle Code,
prioritizing high-speed arterials on the High Injury Network.
2. Retain the five-lane to three-lane road reconfiguration for portions of Grand
between Monterey and Slack Street.
3. Advance pedestrian crossing enhancements, including corner bulbouts, sidewalk
widening, median refuges, and centerline hardening, where appropriate.
4. Explore improvements to the Grand Avenue/US 101 Undercrossing, including
widened sidewalks, sidewalk-level protected bike lanes, lighting, and public
artwork (including input from City Parks and Recreation and community members
on potential aesthetic features).
5. Explore intersection upgrades at the Grand/Loomis/US 101 and Grand/Slack
intersections, which could include roundabout(s) or signal control.
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6. Upgrade street lighting to current City Engineering Standards and consider
pedestrian-scale lighting midblock between intersections.
City Engineering Standards
City Engineering Standards (Chapter 1010, Section 3.1.3), establish a target speed of 30
mph for residential arterial streets that have been designated as part of the High Injury
Network or where there is a documented history of higher-than-average collision
frequency or severity, which would apply to Grand Avenue.
DISCUSSION
Background
In early 2025, low-cost, quick-build safety improvements were completed on Grand
Avenue between Slack Street and Monterey Street as part of the 2024 Roadway Sealing
Project. These measures were recommended in response to a pattern of injury collisions
along the corridor, including a fatal collision involving a cyclist in 2023. These
improvements were installed as a pilot project using temporary materials, including
striping and flexible delineator posts, rather than permanent concrete or other fixed
improvements, to test design features and gather community feedback before advancing
permanent improvements as part of the next repaving of Grand Avenue, which is now
scheduled for summer/fall of 2027.
Guided by the City’s Pavement Management Plan, the Grand Avenue Paving Project will
include essential road maintenance, such as pavement reconstruction, ADA curb r amp
upgrades, and installation of permanent road markings. The project also provides an
opportunity to incorporate additional safety and multimodal improvements, as funding
allows. Final design recommendations for Grand Avenue will be guided by the pilot p roject
monitoring results, the City’s Active Transportation Plan, Safe Streets Action Plan, input
from community members and stakeholders (i.e. Cal Poly, transit and emergency service
providers), the Active Transportation Committee, and ultimately directi on from the City
Council.
As part of the pilot project evaluation, City staff reviewed traffic data, collision history, field
conditions, and community and stakeholder feedback to assess the performance of the
pilot improvements. The results of this evalu ation are presented in the following section
and helped inform staff’s preliminary recommendations for the 2027 Paving Project and
potential longer-term improvements.
The purpose of this study session is to present the results of the Grand Avenue Pilot
Project monitoring study and receive feedback on the preliminary corridor design
concepts for the 2027 Paving Project, as well as long-term recommendations for the
corridor.
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Pilot Project Performance Monitoring Study Results
The Grand Avenue Pilot Project monitoring study included a review of traffic data
(volumes, speeds, collision history, and intersection operations), in -person observations,
and feedback from the general community and key stakeholders, including emergency
service and transit providers, City Maintenance staff, representatives of Cal Poly, and
local schools and childcare facilities located along Grand Avenue.
Overall, monitoring indicates that the pilot has generally improved conditions for people
walking and bicycling, while also identifying several locations where further refinement or
additional safety improvements may be warranted. Key findings are summarized below,
while additional detail is provided in the full Grand Avenue Pilot Project Monitoring
Summary Report.
Traffic Operations and Roadway Configuration
Motor vehicle volumes increased between pre-pilot conditions (2022) and post-pilot
conditions (2026), increasing from approximately 10,200 vehicles/day to 13,800
vehicles/day on the highest volume segment between US 101 and Slack Street. Despite
this increase, the current three-lane configuration continues to operate within the range
identified by the Federal Highway Administration as generally suitable for roadways with
one travel lane in each direction and a center left-turn lane (up to approximately 18,000
vehicles per day preferred, and up to 25,000 vehicles per day under certain conditions).
Following initial concerns about northbound queuing on Grand Avenue spilling back to
the US 101 intersections during the morning peak period after the pilot was installed, staff
made striping modifications to increase northbound queueing capacity. City Council
approved the modifications on October 21, 2025, and construction was completed in
January 2026. Following these modifications, queues and traffic delays entering the Cal
Poly campus have been substantially reduced, as observed by City staff and reported by
Cal Poly representatives. Queues typically extend no farther than the McCollum
intersection and dissolve quickly following the brief morning peak.
During large special events, such as move-in, Open House, and graduation, Cal Poly
continues to use temporary traffic control strategies to manage traffic. Cal Poly typically
uses flaggers at the Grand/Slack intersection to facilitate more efficient operat ions and
temporarily removes some of the flex posts installed as part of the pilot project to provide
two northbound traffic lanes between Loomis Street and Slack Street.
Vehicle Speeds
The pilot project did not result in a significant change in vehicle s peeds on Grand Avenue.
When staff compared speeds before and after the pilot, typical vehicle speeds remained
around 35 mph.
There was, however, a small decrease in the number of drivers traveling 10 mph or more
over the speed limit.
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Since this data was collected, the City lowered the speed limit on Grand Avenue from 35
mph to 30 mph in August 2026. The lower speed limit is intended to further reduce vehicle
speeds and bring speeds closer to the City’s 30-mph target for Grand Avenue.
Collision Data Analysis
The available data does not show a clear increase or decrease in collisions since the pilot
project was installed.
When compared with the five years immediately before the pilot (2020-2024), the post-
pilot average annual number of total collisions was 88% higher, while the average annual
number of fatal and severe injury collisions was 67% higher. However, that comparison
period includes the COVID-19 pandemic years, when traffic volumes and collisions were
unusually low throughout the City.
When compared with the five years before the pandemic (2015-2019), which reflected
more typical traffic volumes, the post-pilot average annual number of total collisions was
4% lower, while the post-pilot average annual number of fatal and severe injury collisions
was 33% lower.
One location continues to be a particular concern: the Grand/Loomis/US 101 Southbound
On-Ramp intersection. Collision trends and reported close calls indicate that this
intersection would benefit from additional safety improvements. As further discussed later
in this report, improvements proposed for this location as part of the Project include
constructing a concrete bulbout to reduce turning speeds, installation of additional
streetlighting and Rectangular Rapid Flashing Beacons (RRFBs ), while a roundabout is
identified as a potential long-term improvement. See the sections below for additional
details on these recommendations.
Bicycle and Pedestrian Conditions
Pedestrian and bicycle volumes have increased compared to pre-pilot conditions and
community feedback has generally been supportive of the buffered and protected bicycle
facilities and pedestrian improvements, including the new crosswalk with Rectangular
Rapid Flashing Beacons (RRFBs) at Grand/McCollum. The monitoring study and
community feedback also identified opportunities to:
a) Refine striping to avoid horizontal shifts in bike lane alignment (where the bike lane
moves to the left or right rather than continuing in a straight line) and maintain a
more direct path for cyclists, to the extent feasible.
b) Evaluate opportunities to improve bicycle and pedestrian facilities at the
Fredericks, US 101 Southbound On-Ramp/Loomis, and Monterey intersections to
reduce conflicts with turning motor vehicles.
c) Provide additional crossing opportunities (particularly at Mill Street where recent
counts indicate clear crossing demand).
d) Improve bicycle and pedestrian conditions within the US 101 undercrossing.
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Community & Stakeholder Feedback
The City launched a public engagement effort in spring 2026 to gather community input
on the Grand Avenue Paving Project and the pilot improvements. The primary
engagement tool was an online survey, which received 229 comments. The City also
issued a news release, established a project website and email list, and conducted
targeted outreach to Cal Poly representatives, nearby schools and childcare facilities,
transit and emergency service providers, and other stakeholders. Additional outreach
included sidewalk decals within the project area, posters on SLO Transit buses, and flyers
distributed on the Cal Poly campus in partnership with the Cal Poly Urbanists group.
Community and stakeholder feedback was generally supportive of the pilot
improvements. Feedback also identified several areas for further consideration, including
vehicle speeds, bicycle and pedestrian facilities at intersections, lighting, the visibility and
clarity of roadway markings and delineation, and congestion during peak periods and
special events.
Additional feedback from the City’s Active Transportation Committee is summarized in a
later section of this report.
Emergency Evacuation Analysis
The San Luis Obispo County Fire Safe Council was commissioned to evaluate how the
Grand Avenue pilot project may affect emergency evacuation. The study compared
evacuation conditions before the pilot project with conditions under the current pilot
configuration, including the five-lane-to-three-lane roadway lane configuration and turn
restrictions at the Grand Avenue/US 101 Southbound On-Ramp/Loomis intersection.
The study evaluated two emergency scenarios: a fast-moving wildfire and a severe storm
causing localized flooding. It also considered two evacuation areas: one involving the
neighborhoods immediately surrounding Grand Avenue and a larger scenario that also
included the Cal Poly campus.
The study estimated that the pilot project would increase evacuation clearance times by
approximately 10 minutes for the smaller evacuation area (from approximately 1 hour to
1 hour 10 minutes) and approximately 20 minutes for the larger evacuation area that
includes the Cal Poly campus (from approximately 1 hour 30 minutes to 1 hour 50
minutes). These estimates apply to both the wildfire and flooding scenarios.
Despite the increase in evacuation time, all modeled scenarios remained within the City’s
two-hour benchmark used for evacuation planning. The study therefore concluded that,
under the conditions modeled, the pilot project did not present a significant impediment
to evacuating the surrounding area.
The Grand Avenue Pilot Project Monitoring Summary Report, included as an attachment
to the monitoring report, provides detailed information on the evacuation study.
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Preliminary Grand Avenue Paving Project Design Concepts
Based on the results of the pilot project monitoring study, staff developed the Preliminary
Grand Avenue Paving Project Design Concepts (Attachment A) for community and
stakeholder review and feedback. Final design recommendations will be informed by
additional community engagement, input from the City’s Active Transportation
Committee, and City Council direction.
The preliminary recommendations for permanent improvements to Grand Avenue as part
of the Project, in addition to essential pavement maintenance and accessibility
improvements are as follows:
1. Retain Roadway Lane Configuration: Retain the current three-lane roadway
configuration within the existing pilot project limits, with minor striping refinements
to provide a longer transition for the southbound merge from two lanes to one lane
near the Cal Poly campus, south of Slack Street. Retain the ability to temporarily
provide two northbound lanes on Grand Avenue between Loomis Street and Slack
Street during large Cal Poly special events using temporary traffic control. See
Figure 1 below for a map illustrating the Grand Avenue roadway lane configuration.
2. Retain Protected Bike Lanes: Retain the existing protected bike lanes within the
current pilot project limits, using flex posts as the vertical separation between the
bike lanes and vehicle travel lanes, consistent with the City Fire Department’s
request. See Figure 2 below for a map illustrating the Grand Avenue bicycle
facilities.
3. Refine Bike Lane Striping: Refine the bike lane striping, where feasible, to provide
a more direct and consistent path for people bicycling and reduce horizontal shifts
in the bike lane.
4. Improve Roadway Markings and Delineation: Improve the visibility and clarity of
roadway markings and vertical delineation. Where feasible, reduce the number of
flex posts while maintaining appropriate separation and visibility, and improve the
visibility of flex posts and other vertical features that remain.
5. Improve Lighting: Pursue additional streetlighting, particularly at the
Grand/Loomis/US 101 Southbound On -Ramp intersection and within the
Grand/US 101 Undercrossing. Additional streetlighting will require coordination
with Caltrans and PG&E.
6. Make Quick-Build Bulbouts Permanent: Where feasible and subject to funding and
site constraints, replace the existing quick-build bulbouts, which currently use
striping and flex posts, with permanent concrete bulbouts.
7. Grand/Fredericks Intersection: Pursue design elements to slow turning vehicle
speeds and improve visibility for people walking and bicycling at the
Grand/Fredericks intersection, including a raised crosswalk if feasible.
8. Grand/US 101 Southbound On-Ramp/Loomis Intersection: Pursue design
elements to improve visibility and reduce conflicts between turning vehicles and
people walking and bicycling at the Grand/US 101 Southbound On -Ramp
intersection, including Rectangular Rapid Flashing Beacons (RRFBs).
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Improvements within the US 101/Grand Avenue Inter change will require Caltrans
coordination.
9. Manage Vehicle Speeds: Pursue design elements intended to encourage lower
vehicle speeds and support a 30 -mph corridor-wide target speed, including
additional speed limit signage, speed limit pavement markings, and radar speed
feedback signs.
10. Grand/Mill Intersection: Pursue an enhanced pedestrian and bicycle crossing at
the Grand/Mill intersection, including features such as high-visibility crosswalk
markings, RRFBs, and corner bulbouts, where feasible.
Figure 1: Grand Avenue Motor Vehicle Lane Configuration
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Figure 2: Grand Avenue Bicycle Facilities
Long-Term Improvements Recommended for Future Consideration
In addition to the improvements proposed for the 2027 Paving Project, staff identified
several longer-term improvements that are worthy of consideration but are not proposed
as part of the 2027 project due to funding limitations, right -of-way needs, agency
coordination, or other design and implementation constraints. These improvements could
be considered in future years as funding and other resources become available.
Attachment B illustrates these potential long-term improvements. Key recommendations
include:
1. Grand Avenue/Slack Street Intersection: Explore a future roundabout, which would
require coordination with Cal Poly and may require off -site right-of-way acquisition.
This location does not currently meet warrants for installation of a traffic signal.
2. Grand Avenue/US 101 Southbound On-Ramp/Loomis Street Intersection: Explore
a future roundabout, which would require coordination with Caltrans and may
require off-site right-of-way acquisition. This location does not currently meet
warrants for installation of a traffic signal.
3. US 101 Undercrossing: Consider additional lighting, public art, sidewalk widening,
and slope stabilization to reduce debris on the sidewalk and bikeway.
Improvements at the US 101 undercrossing would require coordination with
Caltrans, including both short-term improvements planned with the 2027 Paving
Project and any long-term modifications.
4. Sidewalk-Level Protected Bike Lanes: Explore the potential to convert street-level
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protected bike lanes to sidewalk-level facilities, subject to further analysis of
drainage, utility, and emergency vehicle impacts.
5. Permanent Bulbouts: Explore additional permanent bulbouts at locations not
currently shown in the Preliminary Design Concepts (Attachment A) for the 2027
Paving Project. 12 total permanent bulbouts are currently shown in the concept
plans at priority locations, where other locations (15 total) are currently shown with
flex posts and striping only due to budget constraints. These 15 locations are
recommended for permanent bulbouts and could be considered for in the future,
subject to future funding and site constraints.
6. Corridor Lighting: Explore additional intersection lighting and pedestrian-scale
lighting at mid-block locations along the corridor. Additional streetlighting will
require coordination with PG&E.
7. Bus Boarding Islands: Evaluate opportunities to route bikeways behind bus
boarding platforms to reduce conflicts between bicyclists and buses. This may
require off-site right-of-way acquisition or modifications to existing raised center
medians to maintain required emergency vehicle clearance.
8. Sidewalks and Landscaping: Explore opportunities to widen sidewalks, add street
trees, improve landscaping along sidewalk parkways and center medians, and
incorporate stormwater treatment features.
Frequently Asked Questions
To help guide Council’s review of this item, staff has provided answers to the following
frequently asked questions, which represent common inquiries received through public
input and previous conversations regarding Grand Avenue.
Question #1: Can protected bike lanes be extended along the full stretch of G rand
Avenue, as contemplated in the ATP?
Answer: If supported by the Council, the limits of protected bike lanes along Grand
Avenue could be expanded; however, the majority of existing on -street parking would
need to be removed to accomplish this. Staff e xplored the feasibility of retaining on-
street parking by shifting the parking lane between the bike lane and moving traffic
lane, similar to the existing parking-protected bike lanes on portions of Marsh and
Higuera Streets downtown. However, where raised center medians exist—which
applies to nearly all of Grand Avenue—there is insufficient space to do this while
retaining the minimum clearances required for emergency vehicles.
Question #2: Are there more robust intersection improvements that can be advanced
sooner at key intersections, such as the Grand/Loomis/US 101 Southbound Ramp or
Grand/Slack intersection to improve safety and reduce traffic delays?
Answer: Improvements that are realistically feasible at this time are proposed in the
current Preliminary Design Concepts (Attachment A). At the Grand/Loomis/US 101
Southbound Ramp intersection, this includes additional streetlighting, concrete
bulbouts to reduce turning speeds, RRFB beacons to increase visibility of bike/ped
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crossing conflicts, and measures to “harden” the Loomis left turn restrictions to
discourage illegal maneuvers.
As described in further detail in the Pilot Project Monitoring Summary Report, staff
evaluated the potential to convert the Grand/Loomis/US 101 Southbound Ramp and
Grand/Slack intersections to signalized or roundabout control. Neither intersection
meets standard engineering warrants for installation of a traffic signal. While both
intersections could be good candidates for future roundabouts, as shown in the
Recommended Long-Term Improvements in Attachment B, this would not be feasible
as part of the current paving project, as this would require significant additional funding,
potential off-site right-of-way acquisition, and additional time for planning, design,
coordination with utility providers and Caltrans. Funding to advance further planning
and feasibility studies could be pursued in a future City Financial Plan.
Question #3: Can more robust vertical features be added for protected bike lanes, such
as concrete barriers?
Answer: While the Council could direct staff to explore potential for more rigid protected
bike lane features, such as concrete barriers, at this time, the City Fire and Police
Departments have requested that only flex posts be used if protected bike lanes are to
remain on Grand Avenue, as this improves the ability for vehicles to clear to the side
of the road and out of the path of emergency vehicles during more routine emergency
events, as well as in the case of a large -scale evacuation event. The projected
evaluation clearance times presented herein and in the Pilot Project Monitoring Study
conservatively assume only one lane of vehicle traffic is provided where protected bike
lanes are proposed—this analysis does not directly reflect potential increase or
decrease in response/evacuation times for rigid vs. flexible bikeway barriers; however,
local emergency response providers have been clear in their preference for flex posts
at these locations.
Question #4: Can more streetlighting be added along Grand Avenue?
Answer: As shown in Preliminary Design Concepts (Attachment A), staff is
recommending additional lighting at the Grand/US 101 Southbound On -Ramp, along
the Grand/US 101 Underpass, and at the Grand/Monterey intersection —these
locations were prioritized based on crash history and community feedback. Additional
opportunities for streetlighting could be explored, if requested by the Council; however,
to account for this additional cost, staff would need to reduce other project elements,
such as the number of permanent corner bulbouts, or assume an even higher project
budget will be available. All new streetlights will require coordination with PG&E for
electrical service. Additional streetlighting beyond what is currently proposed would
add project complexity and could increase the potential for schedule delays.
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Question #5: Can speed tables or other physical traffic calming measures be used to
reduce speeding on Grand Avenue?
Answer: Physical traffic calming measures with vertical deflection, such as speed
humps/tables, are generally not recommended for higher-traffic arterial streets that
serve as primary emergency response routes, such as Grand Avenue. Several traffic
calming strategies that are more appropriate for this street type are proposed with the
Paving Project, as shown in Attachment A, including retaining the three-lane roadway
lane configuration, using narrow traffic lane widths, features such as bulbouts and
protected bike lanes to visually narrow the roadway width, radar speed feedback signs,
and speed limit pavement markings. As discussed above, the future addition of
roundabouts along Grand Avenue could also help reduce traffic speeds along the
corridor.
Question #6: Where flex posts are proposed to remain along Grand Avenue, what can be
done to increase their visibility?
Answer: While the typical flex posts that have been used in recent years have
performed well in terms of durability and ongoing maintenance, there are other types
of flex posts that could be considered to increase visibility for road users. Staff is happy
to discuss options in further detail, but the images below provide a few examples. Final
selection of street design materials will also be vetted with City maintenance staff
during final design, but staff welcomes Council input on this topic.
Photo of Flex Post Type Used with Grand Avenue Pilot
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Example Photos of Higher-Visibility Flex Post Options
Question #7: Does the proposed streetlighting require PG&E coordination and could that
be a potential source of project delays?
Answer: Yes, the proposed streetlighting will require new electrical service and
coordination with PG&E. While staff will endeavor to initiate this coordination as
early as possible during design and believes there is still adequate time to
properly accommodate this process within the current project schedule, there is
always some possibility that could be a source of potential project delays.
Similarly, any work near the Grand Avenue/US 101 interchange will require
design approval and encroachment permit issuance by Caltrans. Early
coordination with both PG&E and Caltrans will be a critical path as the project
proceeds into detailed design.
Previous Council or Advisory Body Action
Previous Active Transportation Committee Action
Prior to construction, the Grand Avenue Pilot Project was presented to the Active
Transportation Committee (ATC) on February 29, 2024 as part of the 2024 Roadway
Sealing Project. At that meeting, the ATC provided comments and recommendations to
guide the final project designs. Staff presented an update to the ATC on proposed minor
striping modifications to the pilot project on March 20, 2025.
At its May 20, 2026 meeting, the ATC provided preliminary feedback on the performance
of the Grand Avenue Pilot Project, where the committee generally viewed the pilot project
positively, citing the pedestrian and bicyclist improvements as a net benefit.
At its September 17, 2026, meeting, the committee conducted a more detailed review of
the Pilot Project Performance Monitoring Results and Preliminary Design Concepts. The
committee generally supported the safety and active transportation improvements
proposed in the Grand Avenue Paving Project Preliminary Design Concepts while
providing the following feedback:
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a) Pursue more robust vertical protection for protected bike lanes: The ATC made a
motion to pursue more rigid protected bikeway separation features, such as
concrete barriers. Prefabricated concrete curbs for protected bikeway separation,
similar to those proposed along sections of Higuera Street as part of the Higuera
Complete Streets Project, are estimated to add approximately $100,000 to the
project cost. This recommendation conflicts with the City Fire and Police
Department’s request to retain flex posts as the vertical separation treatment.
b) Provide the ability for a bicyclist approaching on the Mill Street Greenway to
activate the proposed RRFB crosswalk system at the Grand/Mill enhanced
crossing.
Previous City Council Action
The City Council approved the Grand Avenue pilot improvements as part of the 2024
Roadway Sealing Project on May 21, 2024. Following implementation of the pilot
improvements, staff monitored traffic operations and safety conditions and identified
several areas where short-term striping modifications were warranted. The City Council
approved these modifications on October 21, 2025.
Public Engagement
As documented in the May 21, 2024 City Council Agenda Report, significant public
engagement activities were conducted prior to installation of the Grand Avenue pilot
project, including an in-person public workshop, project website, direct postcard notices
to properties in the project vicinity, and several public hearings.
The City launched a new public engagement effort in the spring of 2026 to gather
community input on the pilot project potential permanent improvement strategies for the
Project. As described previously, an online community input survey was created to solicit
public input, which received a total of 229 comments. To encourage participation and
increase awareness of the survey and the forthcoming Paving Project, the City issued a
news release, established a project website and email list, provided targeted notifications
to Cal Poly student and administrative representatives, nearby schools and childcare
facilities, transit and emergency service providers, installed sidewalk decals within the
project area, placed posters on SLO Transit buses, and partnered with the Cal Poly
Urbanists group to distribute flyers on the Cal Poly campus.
In September 2026, direct mailers were sent to properties along the Grand Avenue
corridor, and a citywide news release was issued to provide notice of the forthcoming
September ATC meeting and this Council Study Session as opportunities for public
feedback on the 2027 Paving Project. City staff also provided a presentation on the project
to the Cal Poly Student-Community Liaison Committee (SCLC) in early September 2026.
Primary feedback provided from the SCLC included support for additional streetlighting
and interest in closely coordinating project construction traffic handling to minimize
impacts to Cal Poly Move-In and day-to-day campus peak traffic demands.
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Community and stakeholder feedback provided through the survey and directly to staff
has generally been supportive of the pilot project improvements, while also identifying
concerns related to vehicle speeds, bicycle facilities at intersections, lighting, visibility and
clarity of roadway markings and delineation, and congestion during peak periods and
special events.
CONCURRENCE
Transportation staff have solicited feedback on the pilot project and reviewed the
preliminary design concepts for the 2027 Grand Avenue Paving Project with City
emergency services staff from the San Luis Obispo Fire and Police Departments. As
summarized in earlier sections of this report and the Pilot Pro ject Monitoring Summary
Report, the Fire and Police Departments have not identified significant operational
concerns associated with the traffic lane reductions or other pilot project features.
The Fire Department has requested that flex posts be retained as the form of vertical
protected bikeway delineation rather than adding more rigid concrete barriers. Flex posts
provide greater flexibility for emergency vehicles to move to the side of the roadway and
clear the path of emergency vehicles when necessary. In addition, corner bulbouts and
other vertical design elements are being designed to avoid impediments to turning
maneuvers for City fire trucks and other large commercial vehicles.
Final designs will be shared with both the City Fire and Police Departments for input
before advancing the 2027 Paving Project to construction.
This staff report has also been reviewed by the City Attorney’s Office, Finance
Department, and City Administration for concurrence.
ENVIRONMENTAL REVIEW
This study session is not subject to the California Environmental Quality Act (CEQA)
because Council is being asked to receive information and provide direction on
preliminary design concepts; no project approval or authorization to construct
improvements is requested at this time.
Formal CEQA review will be prepared for the 2027 Paving Project once final project
designs and scope have been further refined and will be discussed further when staff
returns with a request for Council to approve the final project plans and specificati ons.
As with most of the City’s annual paving projects, staff expect that the Project will qualify
for an Exemption to CEQA pursuant to State CEQA Guidelines Section 15301 Class 1
(Existing Facilities) and 15302 Class 2 (Replacement or Reconstruction).
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FISCAL IMPACT
Budgeted: Yes Budget Year: 2027-28
Funding Identified: Yes
Fiscal Analysis:
Funding
Sources
Total Budget
Available
Current
Funding
Request
Remaining
Balance
Annual
Ongoing
Cost
General Fund $ $ $ $
State
Federal
Fees
Other:
Total $ $ $ $
There is no immediate fiscal impact attributed to the recommendations in this report;
however, the options presented and resulting Council feedback will affect the total cost of
the Grand Avenue Paving Project. The following provides a preliminary summary of
anticipated project funding and cost estimates based on early design concepts.
The total budget for the 2027 Paving Project has not yet been finalized, as project funds
will be programmed for Fiscal Year 2027-28, Year 1 of the City’s next two-year Financial
Plan. For the purposes of guiding Preliminary Design Concepts (Attachment A), an
estimated project budget of $8.5 million was assumed—this is in line with the total budget
for the recent 2025 Paving Project on Sacramento Drive and Tank Farm Road, which
cost approximately $9 million.
The $8.5 million estimated project budget includes costs of approximately $7 million for
essential maintenance (paving, required ADA ramp upgrades, new striping), and a
reasonable level of complete street and safety “betterments” of approximately $1.5 million
to improve pedestrian/bicycle facilities and overall safety.
The final project budget is pending refinement with development of the 2027-29 Financial
Plan, and final project design details could change based on (a) funding availability, (b)
unforeseen constraints revealed through further design work, or (c) new information
revealed through coordination with outside parties, such as PG&E for new electrical work
and Caltrans, who must approve any work near the Grand/US 101 interchange.
While staff has already prioritized the scope of “betterment” elements currently
contemplated based on greatest benefit to safety and per the results of the pilot project
monitoring, the scope of improvements beyond essential maintenance could be scaled
back further if there is less funding ultimately available.
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Item 8a
Project Elements for Grand Avenue Preliminary
Cost Estimate
Essential Maintenance Work
(paving, ADA curb ramps, utility adjustments, restriping, temporary
traffic control, etc.)
$5,400,000
Additional Complete Street Elements:
Concrete Bulbouts & Median Modifications $ 800,000
Additional Lighting $ 250,000
RRFBs at Grand/Mill and Grand/US 101 Southbound Ramp $ 75,000
Other Costs
(Contingency, Construction Management, Materials Testing, etc.) $1,975,000
TOTAL $ 8,500,000
As described in Alternative #2 below, the Council could pre-emptively direct staff to
continue work on the Project assuming a lower amount of available funding, prioritizing
limited funding towards essential maintenance work and perhaps a smaller scope of
complete street “betterments”. Under this scenario, staff would request Council and
community input on prioritization of improvements, while staff would recommend
prioritizing improvements at the Grand Avenue/Loomis/US 101 SB Ramp intersection,
where feasible.
It should be noted that staff did evaluate outside grant programs as potential funding
opportunities to support his project. However, the programs that would best align with the
proposed scope of this project, such as the State Active Transportation Program (ATP),
Federal Highway Safety Improvement Program (HSIP) programs did not have application
cycle that aligned with the schedule for this project. The next application cycles for ATP
and HSIP grant programs are anticipated to be in 2028, which could align with City
projects targeted for construction in 2029 or beyond.
ALTERNATIVES
1. Council could direct staff to modify the proposed Project designs, assuming a
similar level of Project funding as currently contemplated. Council could direct
staff to pursue other design elements or priorities than those currently reflected in the
preliminary concepts, assuming a similar level of Project funding as currently
contemplated. This could include:
Restore the pre-pilot configuration of Grand Avenue with two traffic lanes in
each direction, removing protected bike lanes, bulbouts, or other pilot features
as necessary.
Remove the turn restrictions at the Grand/Loomis intersection.
Reduce or remove quick-build striped bulbouts, flex posts, or other temporary
design features.
Prioritize additional streetlighting, which may require increasing the project
budget or reducing other project scope.
Pursue permanent corner bulbouts at other locations not shown in the
Preliminary Design Concepts
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Item 8a
Reduce or eliminate green bike lane coloring.
Expand the limits of the protected bike lanes, consistent with Active
Transportation Plan recommendations, which would require additional on -
street parking removal and further review with emergency services.
Pursue more rigid separation between the protected bike lanes and vehicle
travel lanes, although this would be inconsistent with the City Fire Department's
recommendation to retain flexible posts for emergency access.
2. Council could direct staff to reduce the scope of improvements proposed with
the Project to reduce costs, prioritizing essential paving and only the highest-
priority safety improvements that could be funded assuming a more modest
budget.
Under this alternative, staff would continue with the 2027 Grand Avenue Paving
Project with the assumption that less funding will be available. Accordingly, designs
would be refined to prioritize pavement rehabilitation, required ADA improvements,
and a reduced scope of “betterments”, focusing on a reduced scope of the highest-
priority safety improvements identified through pilot monitoring results. Other
improvements could be reduced, modified, or deferred to remain within a more modest
budget. This approach would allow the City to address the condition of Grand Avenue
while focusing available funding on the improvements with the greatest safety and
operational benefit, such as improvements to the Grand/Loomis/US 101 SB Ramp
intersection.
3. Council could direct staff not to proceed with permanent improvements as
part of the 2027 Paving Project, or delay the project.
Council could direct staff to defer permanent improvements on Grand Avenue and
prioritize other streets for pavement maintenance. Deferring the project would allow
additional time to explore the feasibility, funding, and design of more substantial
improvements, such as roundabouts at the Grand/Slack and/or Grand/US 101
Southbound On-Ramp/Loomis intersection, additional bulbouts or streetlighting. If this
alternative is selected, some maintenance work would likely still need to be advanced
on Grand Avenue in the short term to refresh faded pavement markings and address
the most severe areas of pavement deterioration.
If the Council is interested in pursuing a roundabout at Grand/Slack or Grand/US 101,
staff expects that these improvements could require $6 million to $10 million each in
additional construction funding, and would require at least three (3) years for additio nal
planning, environmental review and design work. Challenges with off -site property
acquisition, utility and Caltrans coordination could increase the costs and schedule
beyond these estimates.
ATTACHMENTS
A - Preliminary Grand Avenue Paving Project Design Concepts
B - Grand Avenue Improvements Recommended for Future Consideration
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