Modification of an Existing Concrete Weir

Description: Work consists of dewatering and water control; partial demolition and removal of portions of the existing concrete weir and of conflicting riprap and hardware; structure excavation, sediment removal, and subgrade preparation; placement of crushed rock and aggregate base; installation of post-installed #6 adhesive dowels into the existing structure; furnishing and placing reinforcing steel and cast-in-place concrete for the new weir walls, floor, cut-off wall, and a pad for a future catwalk; forming the gate opening and district blackouts; structure backfill.