Shipment of Steel Liners Arrives for 1 Billion Delaware ...
Jun 20, 2017· Shipment of Steel Liners Arrives for 1 Billion Delaware Aqueduct Repair. ... The portion underneath the Hudson River, however, was built through cracked and faulted limestone—a geology formation that lacked adequate support for the tunnel. When the aqueduct was built in the 1930s and 1940s, engineers provided structural support for this ...