Stormwater

Market Street Drainage Improvements – Divisions I, II, III

Client
City of Charleston
Date
In Progress
Disciplines
Civil Engineering
Construction Administration & Inspection
Environmental
Surveying
Water & Wastewater Engineering
Objectives

With approximately 4 million visitors each year, Charleston’s Market Street corridor is known for its beauty and rich history, but it also is notorious for its frequent flooding. The City of Charleston requested that Davis & Floyd provide engineering services to improve the drainage capabilities on Market Street and surrounding areas.

Scope

The project was split into three divisions:

Division I - upgraded the existing stormwater pump station near the South Carolina Aquarium to accommodate additional flows from the Market Street drainage area

Division II - developed a 9-foot-diameter tunnel approximately 140 feet beneath Concord Street and Market Street connecting the Market Street drainage area to the pump station

Division III (currently being designed by Davis & Floyd) - design of the near-surface stormwater collection system and streetscape improvements including expanded sidewalks, multiuse lanes, new landscaped areas, and undergrounding of overhead utilities to improve the aesthetics and pedestrian flow along the corridor

Challenges

Coordinating with the Downtown Market Merchants Association, City of Charleston, and SCDOT to develop construction staging plans and schedule

Outcome

Designed a stormwater system to help alleviate flooding on Market Street and surrounding areas.

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