San Francisco Bay Toll-Bridge
Additional Details:
|
World's longest bridge - 7.1 miles long; spans San Francisco Bay from San Mateo to Mt. Eden; cost $7,500,000; monolithic construction, except for five steel spans (300 feet each) across deep water channel. Central span is a lift span, giving a clearance of 135 feet when raised, to allow vessels to pass. It reduces automobile travel between San Francisco and Central and Southern California points by thirty minutes.
From the Darlene Thorne Collection |
