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Sum of the Parts

by Ken Friman, (M.ASCE), Proj. Dir.; Morrison Knudsen Corp./Traylor Bros./Weeks Marine Joint Venture, San Francisco, CA,
Jim Brennan, P.E., Proj. Engr.; Morrison Knudsen Corp./Traylor Bros./Weeks Marine Joint Venture, San Francisco, CA,


Serial Information: Civil Engineering—ASCE, 2000, Vol. 70, Issue 3, Pg. 56-59


Document Type: Feature article

Abstract:

As with all of the bay bridges that serve as life lines to the San Francisco peninsula, the 32-year-old San Mateo Bridge needs strengthening to withstand a maximum credible earthquake with minimal risk of collapse. Strengthening the high-rise portion of the San Mateo Bridge required retrofitting the superstructure, substructure, and pier foundations within tight spaces. The design called for upgrading the steel box girder hinges, drilling new piles, and encasing piers in either concrete collars or steel jackets.

Subject Headings: Steel piles | Structural strength | Piers | Concrete piles | Bridges | Bridge foundations | Superstructures

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