Allegheny River Lock and Dam No. 2

Katie Blackley / 90.5 WESA

The Army Corps of Engineers Pittsburgh District recently finished a $6.6 million renovation of Allegheny River Lock and Dam No. 2 near the Highland Park Bridge. The agency upgraded the concrete land wall inside the chamber, which required 400 cubic yards of concrete.

Vincent DeCarlo, deputy chief of operations for the Pittsburgh District, said pieces of concrete had been breaking off and falling into the chamber, which posed a hazard for commercial and recreational boats.