Charleston Civicplus #909

Engineering design for East-West Oak Forest culvert improvements

The City of Charleston is seeking engineering services to design flood-reduction improvements for culverts in West Ashley. - Government buyer: City of Charleston, Department of Stormwater Management; project contact: Grant Eversmann. - Project: East-West Oak Forest Culvert Improvements in West Ashley, focused on crossings at the West Ashley Greenway and Highway 17. - OEMs and vendors: No product manufacturers or prospective engineering vendors are named. Other named entities include the U.S. Army Corps of Engineers (USACE) and Charleston Water System. - Requested services: Evaluate culvert alternatives and flood effects; provide surveys and geotechnical investigation; perform hydrologic and hydraulic modeling; complete environmental studies and permitting; assist with easements and utility coordination; prepare designs, construction documents, and bid materials; and support bidding, public outreach, construction administration, and operations and maintenance planning. - Develop a full design for the Greenway culvert and concept-level design for the Highway 17 crossing. - Key requirements: Reduce flooding under varying storm and tidal conditions without worsening upstream or downstream impacts. Follow applicable City and USACE requirements and obtain required permits and approvals. The City’s stated Small Business Enterprise participation guideline is 20%. - Products and quantities: No product line items, part numbers, or quantities are specified. - Estimated value: No government estimate is provided; the range below is an analytical estimate.

Description

The City of Charleston is seeking an engineering firm to design increased-capacity culvert improvements at the West Ashley Greenway in the Oak Forest drainage basin, evaluating flood-reduction potential under varying storm and tidal conditions. The work includes evaluating improvements at the Greenway and Highway 17 crossings, modeling, surveys, permitting, design, construction documents, bid documents, and bid-phase support. The project is partially funded by City of Charleston Stormwater and the U.S. Army Corps of Engineers, whose design and construction standards apply and which will solicit construction bids. Statements of qualifications are due December 11, 2026, at 2:00 PM; the consultant should strive to meet the City's Small Business Enterprise goals.

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