Concrete Pour Begins for Mile-Long, 19-Foot-Diameter Tunnel

October 1, 2015

Crews started to pump concrete 114 feet underground to create a 5,600-foot-long, 19-foot-wide tube that will hold stormwater overflow in Loraine, Ohio, reports The Morning Journal News. The concrete is placed into a collapsible form , weighing an estimated 400,000 pounds, that is moved as the project progresses. 

Each pour runs about eight to nine hours and the concrete wall of the tunnel is two feet thick, according to The Morning Journal News. 

The crews so far have advanced about 1,000 feet from the Lorain Pellet Terminal shaft south, or almost 20 percent finished with the 5,600-foot tunnel.