HomeMy WebLinkAbout12/07/1999, C5 - SANTA ROSA STREET BRIDGE REPLACEMENT PROJECT, SPECIFICATION NO. 93-44F council Dec 7, 1999
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CITY OF SAN LU I S O B 1 S P 0
FROM: Michael D. McCluskey, Director of Public Works A 'I
Prepared By: Barbara Lynch, Civil Engineer U-.
SUBJECT: SANTA ROSA STREET BRIDGE REPLACEMENT PROJECT,
SPECIFICATION NO. 93-44F
CAO RECOMNMNDATION
1. Appropriate $25,000 from the unappropriated balance of the General Fund and move it to the
Santa Rosa Street Bridge construction account.
DISCUSSION
The Santa Rosa street bridge replacement project was approved for construction by the City
Council in May of this year. At that time $115,000 was approved for inspection services and
$10,000 for materials testing to be provided by a consultant. The consultant informed the City at
the end of October that they had used approximately 80% of their budget. Staff was previously
made aware there were several potential areas where we might see additional costs. Those costs did
occur and the consultant notified staff of the status of the account.
Two areas to date, have contributed to extra costs. The concrete for the deep pile supports
supporting the new bridge had to be poured under water. This was due to the large volume of water
in the holes, which was too much to be pumped out to the sedimentation basins. When such a
problem occurs, special testing is done on each pile to ensure there are no voids and that proper
density is obtained. This testing cost about$9,000.
Additionally, the prime construction contractor on the project had planned to complete work on
other elements of the bridge while the contractor installing piles was working. Because of the small
size of the work area and the large size of the drilling equipment, this was not possible. To make
up for the lost time, the main contractor has routinely worked 10 to 12 hour days to complete the
work in the creek channel before the expiration of the Federal permits for the project. The inspector
has worked overtime as well, increasing costs. The contractor has also been granted some
additional work days which may lead to a longer contract than anticipated requiring more days of
inspection.
FISCAL IMPACT
The consultant expects we will need an additional $25,000 to complete the project. The Federal
grant program which is providing 80% of eligible construction costs, also provides reimbursement
of construction inspection up to 15% of the construction costs. We anticipate that this additional
$25,000, if used, will be beyond the eligible 15%. At this time it is suggested the additional
$25,000 be allocated from the City's General Fund. When the project is completed, staff will
prepare a final accounting and bill the Federal program for the maximum amount, which may
include reimbursement for some of the additional $25,000. All unused City funds will be available
to support other projects. Based on interim results for 1998-99, adequate resources are available to
fimd the proposed appropriation and retain General Fund balance a minimum policy levels.
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