East 21st Street Bridge, Cable-stayed bridge in Tacoma, United States

The East 21st Street Bridge is a cable-stayed bridge over the Thea Foss Waterway in Tacoma, Washington, completed in January 1997. Its two towers rise 180 feet (55 m) and carry the cables that support a deck of four lanes of State Route 509, linking downtown Tacoma with the Port of Tacoma. Tacoma architect Jim Merritt designed the bridge.

The bridge opened in 1997 as a response to growing traffic demands between downtown and the port district. It became an essential route for vehicles connecting the city center with expanding industrial and shipping operations.

The bridge is sometimes called the Foss Waterway Bridge, though the Murray Morgan Bridge also crosses the Thea Foss Waterway, so the two names are easily confused. Its architect was Jim Merritt, a Tacoma-based architect.

The bridge is accessible for walking and driving as it carries a major public road through the area. Crossing during off-peak hours offers a clearer view of the structure and surrounding waterway without heavy traffic.

The bridge is sometimes called the Foss Waterway Bridge, but the Murray Morgan Bridge also crosses the Thea Foss Waterway, so the name can refer to either crossing. Its architect was Jim Merritt, a Tacoma-based architect.