The Park Street Bridge is a double leaf bascule drawbridge. There are two vessel restriction periods. There are no vessel restrictions on weekends or holidays. The bridge is manned by a alternating four-person crew. Park Street Bridge is equipped with a Marine Radio, the working channel in the San Francisco Bay Area is Channel 9 .
Vessels can also gain a bridge opening by using a horn.
The signal is a long blast followed by a short blast. It's also the main thoroughfare into downtown Alameda and average's almost 40,000 vehicles per day. It receives heavy pedestrian traffic as well. Park Street and High Street are similar designs are share many of the same characteristics. Both are double leaf bascule bridges and each leaf of the bridge can be operated independently.