On June 21, 2021, a barge carrying a new docking entrance for the super flood basin at the Portsmouth Naval Shipyard left contractor Cianbro Corp.’s Ricker’s Wharf location in Portland, Maine, marking completion of one of the most unique structures the company has ever built. Over roughly 18 months, the 5,338-ton concrete structure was built by Cianbro crews on the barge.
“Everybody said we were crazy to build this structure on a barge, but one of the things that we said from Day 1 is that we know we can do this,” says Brendan Scully, Cianbro project manager.