HomeMy WebLinkAbout12/15/2009, C6 - REQUEST FOR PROPOSALS - 2009-11 PAVEMENT DEFLECTION TESTING, SPECIFICATION NO. 90993 council M.-C.,D� 12-15-09
j agenda RepoRt 1�N..b,. CI&
CITY OF SAN LUIS OBISPO
FROM: Jay D. Walter, Director of Public Works 7D'W
Prepared By: Manuel Guzman
SUBJECT: REQUEST FOR PROPOSALS — 2009-11 PAVEMENT DEFLECTION
TESTING, SPECIFICATION NO.90993
RECOMMENDATION
1. Approve the Request for Proposals to provide pavement deflection testing and analysis
services.
2. Authorize Staff to advertise for proposals.
3. Authorize the City Manager to execute an agreement with the selected consulting firm if the
consultant's proposed fees are less than $50,000.
DISCUSSION
Background
Public Works staff is currently in the planning stage for pavement maintenance activities for the
next two years. Using MicroPaver, a computer program the City uses for pavement management,
staff has identified streets in Pavement Areas 3 and 4 that are likely candidates to be included in
the reconstruction and resurfacing projects over the next two years. Based on recent Council
direction, staff is also reviewing all arterial streets to determine their need for improvement to
reach new quality goals for these types of streets.
One of the features of MicroPaver is the ability to generate a workplan showing how to spend
pavement maintenance dollars in the most effective manner. Recommendations by MicroPaver
are based on the pavement materials, maintenance history and the Pavement Condition Index
(PCI). The PCI is a number ranging from 0-100 and is calculated from visual inspection
information. A high PCI is a road in good to excellent condition, while a low PCI is a road in
poor condition. This analysis has been performed and a preliminary list of streets has been
established for the next two years. The next step in the process of finalizing the scope of work is
to determine the level of funding needed to achieve quality goals on the major streets and the
actual rehabilitation work needed (reconstruction or overlay) for each of these streets.
The streets included in the recommended work plan generally fall into one of two categories:
1) streets with enough remaining structural strength to support an asphalt overlay; and
2) streets which have lost most or all of the structural strength and will require complete
reconstruction.
The information gathered from deflection testing helps determine which category each of the
streets falls under. Deflection testing is an actual test of the pavement that reveals the existing
pavement's strength. By utilizing consultant services to perform deflection testing (a service that
Request for Proposals for Pavement Deflection Testing Page 2
cannot be provided in-house), staff will have the information necessary to correctly prioritize,
design and construct pavement rehabilitation projects.
If approved, this Request for Proposals (RFP) will be sent to engineering consulting companies
that specialize in evaluating pavement conditions. The RFP contains a list of streets that are
anticipated to be reconstructed in the next two years.
FISCAL IMPACT
Deflection testing is budgeted in the 2009-11 Financial Plan as part of the Street Reconstruction
and Resurfacing project. The project budget includes $25,000 every two years for deflection
testing. Staff expects proposals to come in higher than the allocated funding and has set a
maximum expenditure of $50,000. Additional funds are available in the Pavement Master
Account which has a balance of over$2,561,892 to support this request.
ALTERNATIVE
Defer deflection testing. The City Council would chose to forgo deflection testing and direct
staff to proceed with next year's pavement reconstruction and rehabilitation projects. This
alternative is not recommended as staff would have to rely on theoretical calculations to estimate
existing pavement strength.
AVAILABLE FOR REVIEW IN THE COUNCIL OFFICE
Request for Proposal for Paving Evaluation Request 2009-11, Specification No. 90993.
\\distore4\Team\Cound1 Agenda Reports\Public Works CAR\2009\CIP\90993 Deflection Testing 2009-11\90993 CAR(Advertising).doc
C6 _a