08032023 - Professional Engineering Svcs-Weir/Bridge Repairs/Riverbank Restoration (Parks)

Mill Pond Park Weir & Pedestrian Bridge Repairs and Chipp-a-waters Park Riverbank Restoration - Professional Engineering Services

The City of Mt. Pleasant is seeking proposals for the design of the Mill Pond Park Weir & Pedestrian Bridge Repairs and Chipp-A-Waters Park Riverbank Restora-tion Project. The Mill Pond Park Weir & Pedestrian Bridge (43.6021, -84.7839) is a cast-in-place concrete weir structure maintaining a difference in up-stream/downstream water levels of approximately 4 feet (a parallel branch of the river runs through a series of rock dam weirs). The substructure consists of con-crete abutments at the east and west ends of the structure, two intermediate concrete piers and concrete wingwalls in the southwest and southeast quadrants. The substructure supports a cast-in-place concrete deck span carrying the non-motorized trail with timber railings mounted to either side of the deck. The City recently obtained an evaluation of the structure that recommended the following:
• In-depth evaluation of the concrete spillway structure.
• Removal of woody debris from the upstream ends of the piers.
• Patching, crack repair and waterproofing of the substructure units.
• Epoxy overlay of the concrete deck.
• Replacement of timber railings.
• Tree removal and clearing around the footprint of the structure.
• Slope stabilization.
• Asphalt trail repairs (anticipating damage during construction).