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Department of Transportation recommending the Board approve and authorize the Chair to sign the Fourth Amendment to Agreement for Services 467-S1411 with Quincy Engineering, Incorporated, to provide continued assistance with advertising for construction bids and contractor submittals for the Mosquito Road Bridge at South Fork American River Project, Capital Improvement Program (CIP) 77126 / 36105028, with the following:
1) Extend the performance period to December 31, 2022;
2) Reducing the not-to-exceed amount to $6,237,483.21;
3) Update contract language per California Department of Transportation federal funding requirements; and
4) No changes to the fee schedule or the scope of the agreement.
FUNDING: Highway Bridge Program Funds (99.9%) and Sacramento Municipal Utility District Funds (0.1%). (Federal and Local Funds)
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DISCUSSION / BACKGROUND
The Mosquito Road Bridge crosses the South Fork of the American River approximately 5.9 miles north of U.S. Highway 50 in Placerville, just south of the community of Swansboro. It is a 9-foot wide, one-lane limited capacity timber suspension bridge with a 140-foot long span over the South Fork of the American River. The existing bridge was built in 1939 and is 74 years old. The bridge is crossed daily by approximately 1,300 vehicles (in both directions). Emergency vehicles are restricted from using the bridge due to the narrow width, combined with multiple hairpin curves and steep grades along the bridge approaches on both sides of the bridge, resulting in delayed emergency response time.
A Request for Proposals process was completed in 2013, from which Quincy Engineering, Incorporated (Quincy) was selected from the list of qualified companies as the best firm to complete a Replacement Study, the Project Approval, Environmental Document, and Final Design. The Agreement for Services was approved by the Board on July 29, 2014, Item 10, Legistar 13-0549. The agreement expiration was to coincide with the C...
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