Mare Island Causeway Bridge - Vallejo California - San Francisco

 Photos of Mare Island Causeway Bridge in Vallejo, San Francisco Bay Area

The Mare Island Causeway Bridge in Vallejo, California connects Mare Island to the mainland.   Located on the Napa River in the North Bay of the San Francisco, it sits on the center of the Causeway crossing the Mare Island Strait at mile 2.8, Vallejo. The Bridge is 165 feet long and 48.5 feet wide. It provides crossing for vehicular, pedestrian and rail traffic.

The Mare Island Causeway Bridge is staffed with an on duty Bridge Operator who will open the bridge on signal between 9 a.m. and 7 p.m. seven days/week, including Holidays. When the bridge is unmanned it can be opened by calling (707) 648-4313. Two (2) hours advanced notice is required during the after-hours time period.

During hours of operation you can request a Bridge opening by Sound Signal. Sound signals can be made by whistle, horn, megaphone, hailer or other device capable of producing the described signals loud enough to be heard by the Bridge Operator.

To request an opening, provide one prolonged blast followed by one short blast. If we are able to open, we will respond in like manner. If we cannot open immediately, we will sound five short blasts in rapid succession.
By Visual Signal--raise and lower a white flag vertically or a white, amber or green light vertically.

By Radio call  Marine Radio Channel 13 (156.650 MHz).
By Telephone call the Bridge Control Room at 707-562-3556.

Eleventh Coast Guard District Bridge Section
Minimum Clearance (Span down) 12.4 feet (based on High High Mean Water)
Maximum Clearance (fully raised) 99.7 Feet (based upon High High Mean Water, 87.3 feet maximum lift height plus 12.4 feet distance to water)