Providing a 75-year design life for the structurally deficient critical link between the city of Chelsea, Mass., its northern suburbs and Boston, the rehabilitation of the Chelsea Viaduct involved night work with heavy equipment and posed many risks.
These 80-year-old structures are critical components of a system that ensures consistent navigability and access along the Mississippi River from Minnesota to the Gulf Coast.
On Nov. 11, 2020, a trucking accident on the Brent Spence Bridge—a key thoroughfare between Covington, Ky., and Cincinnati—caused a fire that damaged the double-decker cantilevered truss bridge’s upper deck floor system steel, drainage, deck, barriers, electrical components and the lower deck’s overlay.
