Source provides theory on why concrete is falling from Richmond-San Rafael Bridge
SAN RAFAEL,Calif. (KGO) — The Richmond-San Rafael Bridge was closed due to falling chunks of concrete on Thursday. A high-level source who works with engineers on the bridge project tells me they believe they’ve identified the cause. VIDEO: Here’s where concrete chunks on Richmond-San Rafael Bridge came from, fell It’s an expansion joint on the […]
New Bay Bridge’s earthquake challenges and fixes – The Mercury News
OAKLAND — Building the new Bay Bridge to the highest seismic safety standards in California history presented engineers with numerous challenges. In a recent bridge tour, Caltrans principal bridge engineer Brian Maroney explained how designers tackled difficult seismic scenarios and what he expects to see on the bridge after a big earthquake. Expansion joints The […]
Menlo Park’s Dumbarton Bridge — scheduled for closure this weekend — is a bridge of many firsts
by Linda Hubbard on May 25, 2012 All six lanes of the Dumbarton Bridge, which links Menlo Park with Fremont, will be closed in both directions starting night, May 25, at 10:00 pm and ending Tuesday, May 29, at 5:00 am, to complete a major element of a seismic retrofit project. We thought we’d take […]