San Bruno Channel Bridge (Bridge 35C0044) Replacement Project

Summary

SCH Number
2016028343
Lead Agency
Fish & Wildlife 3 (Napa) (California Department of Fish and Wildlife, Region 3)
Document Title
San Bruno Channel Bridge (Bridge 35C0044) Replacement Project
Document Type
NOE - Notice of Exemption
Received
Posted
2/18/2016

Document Description
The project entails replacing the existing 64-foot by 108-foot wide three-span concrete slab bridge with a cast-in-place, post-tensioned single-span concrete slab bridge. The new bridge will have the same soffit as the existing bridge. Forty piles will be removed by cutting them off approximately three feet below the ground surface of the channel using a chainsaw or jackhammer. Fifty 14-inch concrete piles, 25 underneath each bridge abutment, will be installed with an impact pile driver. No new piles will be installed in the channel bed. A concrete diaphragm abutment will be placed on the new piles within the existing abutment location. The channel will be diverted between 50 feet upstream and downstream of the bridge with coffer dams and a diversion pipe and pump. Equipment and staging areas will be on an existing Caltrans storage area under the exit and entrance ramps for Highway 101 and interstate 380. Issuance of a streambed alteration agreement number 1600-2015-0355-R3 is pursuant to Fish and Game Code Section 1602.

Contact Information
Suanne DeLeon
California Department of Fish and Wildlife, Region 3
7329 Silverado Trail
Napa, CA 94558

Phone : (831) 440-9433

Location

Cities
South San Francisco
Counties
San Mateo

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15302 C:2
Reasons for Exemption
Project includes replacing the existing bridge and removing the existing in-channel pilings which will facilitate channel flow.
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