Park Street Bridge, Road bascule bridge in Oakland-Alameda area, California.

Park Street Bridge is a road structure spanning the water between Oakland and Alameda with a double-leaf bascule design. The movable spans rotate upward to let boats pass while the roadway continues to carry vehicle traffic during normal operation.

The first Park Street bridge opened in 1893, built by the U.S. Government alongside the High Street and Fruitvale Avenue bridges in exchange for rights-of-way to dredge the channel between San Antonio Creek and San Leandro Bay. It had a wooden deck, a wrought-iron through-truss swing span and wooden trestle approaches. The present double-leaf bascule bridge, designed by the County of Alameda Surveyors Office, opened in 1935 under the Federal WPA program.

The 1935 opening included a public wedding of a man from Oakland and a woman from Alameda, staged to mark the bridge joining the two cities. Earlier, riding the 1893 swing bridge as it opened for water traffic and fishing from it were popular pastimes. The bridge appears in a scene of the 1995 Sandra Bullock film "The Net".

The bridge opens about 1,700 times a year and carries roughly 40,000 vehicles each workday, so waits are routine. Its narrow walkway is the easiest bicycle crossing to Alameda; the Posey Tube path is hard to use when someone else is in it. Look for the external racks at the ends of the trusses.

The bridge appears in a scene of the 1995 Sandra Bullock film "The Net". Its fixed-trunnion bascule design closely mirrors early Chicago bascule bridges of the 1900s, with an external rack visible at the ends of the trusses and no overhead bracing at midspan.