Berkeley I-80 bridge, Pedestrian and bicycle bridge in Berkeley, California, US.

The Berkeley I-80 bridge is a pedestrian and bicycle structure that connects the downtown area with the waterfront and crosses over multiple lanes of highway traffic. The construction features pathways on both sides to safely carry people across the roadway.

Opened on February 27, 2002, the bridge cost $6.4 million and was built to give cyclists, pedestrians and wheelchair users a direct route to the Berkeley Marina and Eastshore State Park. Before it opened, the only wheelchair-accessible route was an undercrossing 1 mile (1.6 km) to the north. The National Bicycle Greenway has used it since 2003 in its Oakland to Berkeley Mayors' Ride.

The bridge serves as a key link in a network of paths that connect cyclists and pedestrians across the entire bay area. It allows people to cross the highway without interfering with vehicle traffic below.

The bridge is wide enough for both pedestrians and cyclists and features separate lanes and sidewalks. Access is designed for people with disabilities, so all users can navigate the structure easily.

The bridge carries two bike lanes and a raised sidewalk, and is wide enough for emergency vehicles. Since 2003 it has formed part of the National Bicycle Greenway's Oakland to Berkeley Mayors' Ride.