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View of the Town of Lockhart, the old Lockhart Mill site and the canal with four bridges successfully replaced
Aesthetic arches hide utilities on the completed canal bridge
Sideview of SC 9 bridge
Roadway and approaches to SC 9 bridge
Foundation installation within the canal during water drawdown
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SC 9 Bridge Replacements Through a Historic Mill Village

  • CLIENT: South Carolina Department of Transportation
  • LOCATION: Lockhart, SC

Transportation project utilizes water resources experts

One of SC 9’s four structurally deficient and functionally obsolete bridges crossed over a nearly 200-year-old power-generating canal. Compromising either the high-hazard embankment or canal during bridge reconstruction would have been catastrophic to the Town of Lockhart, causing flooding to the residential area.

Knowledge of FERC requirements is atypical for South Carolina Department of Transportation projects, so Mead & Hunt leveraged resources within our full-service firm to navigate this process. Internal Mead & Hunt dam experts determined construction requirements before chronicling construction activity within the canal zone. Our project team could then anticipate and mitigate potential risks with greater accuracy. Construction was completed without a single compliance issue or contractor-related delay.

To maintain the historic nature of this once-vibrant mill town, conserving a turn-of-the-century home beside SC 9 was a top priority. By installing a retaining wall beside the house, we minimized impacts and the project footprint. We then preserved original stone retaining walls and repurposed impacted stones as an aesthetic feature for the Town’s welcome sign.

Mead & Hunt’s design included upgraded pedestrian accommodations. Multi-use paths and Americans with Disabilities Act-compliant ramps provide locals safe access to homes, stores and trails throughout the corridor.

Awards

ACEC South Carolina, Engineering Excellence Award

Key Project Aspects

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Crosses FERC high hazard canal

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Coordination with FERC and SHPO

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Obtained design exception, saving $5-10M

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Successfully avoided 55-mile detour

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Preserved historic bridge aesthetic

More on this project

Lockhart Bridges
quotation marks

Thanks to their creative engineering solutions and technical expertise, Mead & Hunt exceeded our needs, and successfully delivered this multifaceted, complex project while promoting project safety and cost-effective solutions. The final product was one that recognized the historic nature of the Town of Lockhart while removing several structures from SCDOT’s functionally obsolete and structurally deficient list – a true win-win for all stakeholders involved.

Berry Mattox, PE, Assoc. DBIA, Program Manager, South Carolina Department of Transportation

Relevant Projects

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Wisconsin State Highway 96 Reconstruction

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