Wabasso Bridge, Deck arch bridge in Indian River County, Florida, US.

The Wabasso Causeway Bridge is a two-lane concrete bridge spanning the Indian River, part of the Intracoastal Waterway, in Indian River County, Florida. Built by Scott Construction Company and completed in 1970, it has a vertical clearance of 65 feet (20 m) and crosses the waterway at Statute Mile 943, southeast of unlighted day beacon #80. Its Florida Department of Transportation numbers are 880051 and 880053.

The first bridge at this crossing was a wooden drawbridge completed in 1927, carrying traffic over the Indian River for over four decades. Scott Construction Company built its replacement, the current two-lane concrete bridge, which was completed in 1970. The Florida Department of Transportation lists the structure under numbers 880051 and 880053.

The bridge stands near Two Dollar Bluff, a mound of shells, pottery shards and bones left by the Ais people; the material was still there until 1927, when the old drawbridge was built. The name Two Dollar Bluff is local usage recorded for the site beside the crossing.

The bridge carries two lanes across the Indian River at Intracoastal Waterway statute mile 943, southeast of unlighted day beacon #80. Its vertical clearance is 65 feet (20 m), so taller masts cannot pass beneath. Florida Department of Transportation numbers 880051 and 880053 identify the structure.

The earlier wooden bridge served as a checkpoint during World War II where only island residents could pass after the bridge tender verified their identity. This security measure made crossing the river a restricted privilege for much of the war period.