Y--Spillway Chute Slab and Stilling Basin Concrete, Joint, and Subdrain Repairs, Garrison Dam, ND

This contract, issued by the Department of Defense through the W071 Endist Omaha, involves concrete, joint, and subdrain repairs for the Garrison Dam Spillway located near Riverdale, North Dakota. The primary scope of work requires the removal and replacement of approximately 3,400 square feet of partial depth concrete, with a minimum depth of 6 inches, using hydrodemolition equipment. This specific work is focused on the construction joint at station 62+50, situated on the 20 percent slope transition between the chute slab and the stilling basin. Additional optional tasks may be requested, including an extra 8,200 square feet of hydrodemolition between stations 45+00 and 46+50 and roughly 300 square feet of spall and patch repairs. The optional scope also encompasses the rehabilitation and resealing of nearly 13,000 linear feet of concrete contraction and construction joints, as well as approximately 230 linear feet of cast-in-place pipe repairs.