The Melbourne Causeway is located entirely within Brevard County, Florida in the United States. It is composed of three bridges and connects the municipalities of Melbourne and Indialantic across the Indian River Lagoon in Brevard County. The causeway is part of U.S. 192 (also known as SR 500), whose eastern terminus is located approximately 2 miles (3.2 km) east of the bridge, at SR A1A. East of the bridge, the road is known locally as Fifth Avenue. On the western side, the road continues through downtown Melbourne as Strawbridge Avenue. Each July 4 the bridge is closed for a fireworks show.