One tunnel boring machine has made headway drilling a new 5,700-ft-long tube for the Chesapeake Bay Bridge-Tunnel, part of a $756-million project to eliminatie a longstanding bottleneck by connecting parallel above-water segments constructed in 1995 to carry southbound traffic.
Construction begins to replace the troublesome 127-year-old Norwalk, Conn., railroad crossing with a structure better suited to serve the region’s growing volume of passenger rail traffic.