Bay Farm Island Bridge
The San Leandro Bay Bridge, better known as the Bay Farm Island Bridge, is a single-leaf bascule drawbridge spanning the San Leandro Channel, the inlet of San Leandro Bay within the San Francisco Bay Area, California, United States. It carries California State Route 61 and links the main island of Alameda with Bay Farm Island within the city of Alameda. The present bridge was completed in 1953; it is paralleled by a second bridge (completed in 1995) devoted to pedestrian and bicycle traffic, the Bay Farm Island Bicycle Bridge.
Bay Farm Island Bridge | |
|---|---|
Aerial view of both bridges (2009) | |
| Coordinates | 37.748924°N 122.236383°W |
| Carries | cars and trucks on SR 61 |
| Crosses | San Leandro Channel, leading to San Leandro Bay |
| Locale | San Francisco Bay Area |
| Official name | San Leandro Bay Bridge |
| NBI | 33 0086 |
| Characteristics | |
| Design | Bascule truss |
| Material | Steel, concrete |
| Total length | 963 ft 6 in (293.67 m) |
| Width | 70 ft 6 in (21.49 m) overall 26 ft (7.9 m) roadway 5 ft (1.5 m) sidewalk |
| Longest span | 125 ft (38 m) bascule |
| Clearance below | 20 ft (6.1 m) (high tide) 26 ft (7.9 m) (low tide) |
| History | |
| Constructed by | Duncason-Harleson and Stolte |
| Construction start | April 18, 1951 |
| Opened | July 1, 1953 |
| Statistics | |
| Daily traffic | 40,000 |
| Location | |
Bay Farm Island Bicycle Bridge | |
|---|---|
View along bicycle bridge | |
| Coordinates | 37°44′56.5″N 122°14′9.3″W |
| Carries | bicycles and pedestrians on San Francisco Bay Trail |
| Official name | San Leandro Bay Bike Bridge |
| Characteristics | |
| Design | Bascule, pony Warren truss |
| Material | Steel, concrete |
| Total length | 750 ft (230 m) |
| Width | 14 ft (4.3 m) overall 11 ft (3.4 m) curb-to-curb |
| Longest span | 130 feet (40 m) bascule |
| Clearance below | 20 ft (6.1 m) (high tide) 26 ft (7.9 m) (low tide) |
| History | |
| Construction start | 1993 |
| Opened | 1995 |
| Location | |
The Bay Farm Island Bridge is one of the four bridges and two tunnels linking Alameda Island with the mainland. It is the longest bridge of the four.
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