In 1956, President Eisenhower signed the Federal Aid Highway Act. Within two years, planning began to establish Interstate 95 (I-95) as the main highway on the East Coast, running from the Canadian border in Maine to downtown Miami, FL. Work on the I-95 section between Baltimore and Washington DC commenced in 1968. This length of highway opened in 1971.
The current I-95 Patapsco bridge was built in 1982. The concrete structure of 7132 feet falls in one of the most heavily traveled routes in Maryland, transporting an average of 115,500 vehicles daily (as of 2001) over the Patapsco River and the CSX Railroad (previously the Baltimore & Ohio Railroad Main Line).