My company is working on the West approach to the San Francisco Bay Bridge, from the bridge itself, west into the city for approximately one mile. This is to replace the original approach which was built the to the same specifications as the Cypress Structure which failed 100% in the Loma Prieta earthquake of '89.
All that is remaining of the original 1930's construction is the lower approach about a quarter long. The upper deck has been completely removed and replaced by a more modern structure.
The views were great and it was pretty cool to be walking on the deck right at the foot of the bridge.