I-495 Express Lanes Northern Extension (495 NEXT)

495 NEXT addresses congestion and improves motorist safety by extending the I-495 Express Lanes 2.5 miles and adding two express lanes in each direction between the Dulles Access Road and George Washington Memorial Parkway. Shirley Contracting’s scope of work includes constructing seven bridges, box culverts, and retaining and noise walls; installing a storm sewer and a sanitary sewer; and performing earthwork and water relocation.