14. Bollinger Bridge
City Hall
10300 Torre Avenue
Cupertino, CA 95014-3255
(408) 777-3354
FAX: (408) 777-3333
CITY OF
CUPEIUINO
PUBLIC WORKS DEPARTMENT
Summary
AGENDA ITEM
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AGENDA DATE May 1. 2007
SUBJECT AND ISSUE
Resolution No. 07-m: Authorizing the City Manager to negotiate and execute a third amendment
to the City's existing agreement with the Santa Clara Valley Water District for the reconstruction
of the bridge on Bollinger Road over Calabazas Creek.
BACKGROUND
On January 16, 2001, the City Council authorized the execution of an agreement with the Santa
Clara Valley Water District (SCVWD) for the reconstruction of the bridge on Bollinger Road over
Calabazas Creek in order to increase the hydraulic capacity of the Calabazas Creek channel at the
bridge and to widen Bollinger Road for bicycle lanes.
The original agreement provides for the design and construction of extensive improvements to the
existing bridge that will both enlarge the cross-sectional area of the box culvert to increase its
capacity and lengthen the culvert to accommodate the widening of Bollinger Road. The original
agreement calls for the City to administer the project design contract and for SCVWD to advertise,
award and administer the construction contract.
On May 3,2005, the agreement was amended to reflect changes in the scope of the project. Those
changes included (a) altering the limits and extent of work in the Calabazas Creek channel in order
to better protect and enhance the riparian habitat upstream of the bridge; (b) modifying the work in
the channel to coordinate the project with a long-term flood risk management plan for the reach of
Calabazas Creek between Miller Avenue and Wardell Avenue; (c) including a structural upgrade
of the bridge necessary for widening the bridge; and (d) shifting the project management
responsibilities from the City to SCVWD.
On April 4, 2006, the agreement was again amended because construction of the project had been
delayed by requirements of the environmental approval process, by SCVWD's obligations to its
own project approval process, and by SCVWD's requirement that extensive redesign and physical
modeling of the bridge's complex storm water flow characteristics be undertaken. The amendment
called for SCVWD to pay for the added costs of the extensive hydraulic redesign and modeling
and extended the term of the original agreement, which at that time was on the point of expiring.
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Printed on Recycled Paper
The recently amended project schedule calls for construction to be undertaken over two years,
running from June to October in 2007 and from April to September in 2008. Because of the three-
year delay of the project due to the hydraulic redesign and modeling and SCVWD's approval
process, the construction cost has escalated significantly. The low bid for construction of
$2,730,072.00 that was just received by SCVWD is approximately 75% greater than the cost of
construction estimated prior to the three-year delay. Because this escalation is primarily due to the
delay resulting from SCVWD's aforementioned requirements, Staff has proposed to SCVWD a
third amendment to the agreement that would limit the City's share of the cost of the project.
Because of the significant escalation of the cost of constructing the project mentioned above, Staff
has proposed that the City's share of the project be limited to amount spent by the City to date plus
the remainder of the funds already appropriated by the City to the project account. Based on the
current cost estimate for the project, the City's share, limited in this way, would be less than the
roughly 21 % share of the project's actual total costs that the City's would be responsible to pay
according to terms of the original agreement.
FISCAL IMPACT
Approval of the resolution will authorize the City Manager to negotiate an amendment to the
existing agreement with the Santa Clara Valley Water District that will limit the City's share of the
Bollinger Bridge project to the $369,900.00 already spent by the City on the project, plus an
amount not to exceed the approximately $156,000.00 already appropriated to Account No. 270-
9443 in the adopted Capital Improvements Program. This total amount of approximately
$525,900.00 would be significantly lower than the City's share of the project's currently estimated
actual total costs.
STAFF RECOMMENDATION
Staff recommends that the City Council adopt Resolution No. 07-J1!1: Authorizing the City
Manager to execute a third amendment to the City's existing agreement with the Santa Clara
Valley Water District for the reconstruction of the bridge on Bollinger Road over Calabazas Creek.
Submitted by:
Approved for submission:
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Ralph A. Qualls, Jr.
Director of Public Works
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David W. Knapp
City Manager
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RESOLUTION NO. 07-074
DRAFT
A RESOLUTION OF THE CITY COUNClL OF THE CITY OF CUPERTINO
AUTHORIZING THE CITY MANAGER TO EXECUTE A THIRD AMENDMENT TO THE
CITY'S EXISTING AGREEMENT WITH THE SANTA CLARA V ALLEY WATER DISTRICT
FOR THE RECONSTRUCTION OF THE BRIDGE ON BOLLINGER ROAD OVER
CALABAZASCREEK
WHEREAS, the project to reconstruct the bridge on Bollinger Road over Calabazas Creek
has been significantly delayed by the Santa Clara Valley Water District's requirement that an
extensive redesign and physical modeling of the bridge's complex storm water flow characteristics
be undertaken; and
WHEREAS, the resulting delay due to the extensive redesign and modeling have led to a
significant escalation in the estimated total actual project cost; and
WHEREAS, the City of Cupertino believes that its responsibility for the escalation in cost
thus caused should be appropriately limited.
NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Cupertino
hereby authorizes the City Manager to negotiate and execute a third amendment to the City's
existing agreement with the Santa Clara Valley Water District for the reconstruction of the bridge
on Bollinger Road over Calabazas Creek and take all necessary associated actions, including
allocation and expenditure of funds, on behalf of the City of Cupertino.
PASSED AND ADOPTED at a regular meeting of the City Council of the City of
Cupertino this 1 st day of May 2007, by the following vote:
Vote Members of the City Council
AYES:
NOES:
ABSENT:
ABSTAIN:
ATTEST:
APPROVED:
City Clerk
Mayor, City of Cupertino
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