Bay Farm Island Bridge and pedestrian drawbridge

Bay Farm Island Bridge and pedestrian drawbridge (Google Maps)
No Thumbnail
No Thumbnail
Google Maps Google Maps Bing Maps Bing Maps Yahoo Maps Yahoo Maps
View in Google Earth
By kjfitz @ 2006-01-25 11:00:32
The Bay Farm Island Bridge is a 125 foot single leaf bascule bridge. It spans the San Leandro Bay inlet to the Oakland Estuary at Otis Drive, and is similar to the Fruitvale Avenue Bridge. The Oakland Estuary is a navigable water way with access to the San Francisco Bay.

A bascule bridge is a a draw bridge that is counterweighted so that it may be raised or lowered easily. The bridge, owned by the State, was built by contractors Duncason-Harleson Company and Stolte Inc in 1952.

Bay Farm Island Bridge is the longest draw bridge in the County. It is almost 1000 feet in length, however the movable span portion of the bridge is approximately 125 feet in length, giving a channel clearance of just 92 feet 4 inches.

Over 40,000 vehicles cross Bay Farm Island Bridge every day. To stop all these vehicles and pedestrians requires the use of 4 traffic gates, one vehicle barrier, and 2 pedestrian gates. The bridge operator also must stay in contact with the City of Alameda Fire and Police Dispatcher in case any vehicle is in route to an emergency or hospital. The bridge will not open in this instance.

The bridge has some unique characteristics. Instead of having the machinery room and operator tower close to or on the shore like the other bridges its has a huge concrete cofferdam in the channel that contains the machinery rooms, counterweight, and operator tower. The Counterweight Pit Area is 50 feet below the roadway surface. If you are standing on the pit floor you’re approximately 25 feet under water.

The bridge has three live load trunion pedestals instead of the two normally on a bascule type bridge. It also has dual machinery rooms that work in tandem. The bridge is powered by two 50 HP electric motors. The bridge operates with four sets of brakes, two machinery brakes and two motor brakes.

Adjacent to the Bay Farm Island Bridge is a bicycle/pedestrian drawbridge operated by Alameda County. Its 10.75 foot roadway carries bicycles, pedestrians and vehicles for the handicapped. Bay Farm Island Bridge also contains the operating console for the Bicycle Bridge so the operator must control two bridges for each vessel opening.
Views by date
Rate as 1Rate as 2Rate as 3Rate as 4Rate as 5Rate as 6Rate as 7Rate as 8Rate as 9Rate as 10
6.0 (4 votes)



Please log in if you don't want to post anonymously (anonymous users cannot post links)

Please enable images and enter code to post
Pics: 1
Bay Farm Island Bridge and pedestrian drawbridge
Nearby maps
Bay Farm Island Bridge
1964 Volkswagen Type 1
1966 Ford Mustang
Toyota Land Cruiser Troop Carrier
Volkswagen 'Thing'
'Molly Maid'
Little Nash Rambler
Girl Scout Cookies
Bill Osborne Model Airplane Flying Field
Doolittle Pond - Wildlife Sanctuary
Soccer game in progress
Golfers on the golf course
Similar maps
Unusual diagonal drawbridge
$500,000,000 proposed bridges to nowhere
Hispano-American Bridge
Bosporus Strait
Pont de l'Alma
True Lies "Bridge scene", 7 Mile Bridge
Lyari Expressway
Chappaquiddick Dike/Bridge
"War of the Worlds" Neighborhood and Bridge
Google "Water View"
Golden Gate Bridge
Öresund Bridge / Tunnel