TerraFirm Innovative geotechnical construction
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      • Bridges
      • Commercial
      • Heavy Civil
      • Marine Structures
      • Beach Road Bridge
      • Charleroi Lock and Dam
      • Chickamauga Lock Cofferdam
      • Clays Ferry Bridge
      • Discovery Bridge
      • Fort Washington Way 6, 8, 12
      • GE Engine Test Facility
      • GIWW Sector Gate
      • Indian Lake Spillway Replacement
      • Inner Harbor Navigation Lake Borgne Surge Barrier, North and South T-Walls
      • Jefferson Lakefront Pumping Stations
      • Kentucky Lock Addition Bridges Substructures
      • Kentucky Dam Lock Addition Cells
      • Kentucky Dam Miter Gate Install
      • Kentucky River Lock and Dam #8 Renovation
      • Kentucky Lock and Dam #9
      • Lane Avenue Bridge
      • Ledbetter Bridge Substructure
      • Ledbetter Bridge Truss Erection
      • Lost River Bridge
      • Marathon Petroleum Ohio River Dock Expansion & Upgrade
      • Marathon Petroleum Bordeaux Terminal New Barge Dock Installation
      • Markland Lock and Dam Tainter Gate Repairs
      • Montgomery Lock and Dam Gate Installation
      • Ohio River Lock and Dam #53 / #52 Dam Wicket Replacement
      • Olmsted Lock and Dam Major Rehabilitation
      • Orange Barrel Media
      • O’Shaughnessy Dam
      • ODOT I-275 Design Build
      • ODOT I-75 / US62
      • Pomeroy Mason Bridge
      • Smithland Hydroelectric Cofferdam
      • Smithland Hydroelectric Power House
      • Southerly Waste Treatment Plant Raw Sewage Pump Building
      • Southerly Waste Water Treatment Plant New Effluent Pump Station and Effluent Conduit
      • Summersville Lake Canvas Bridge
      • U.S. Grant Bridge
      • Virginia 460 Connector Phase 1
      • White River Bridge Replacement
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Home

About Us

  • History
  • Safety Program

Projects

  • All Project List
  • Bridges
    • Beach Road Bridge
    • Clays Ferry Bridge
    • Discovery Bridge
    • Kentucky Dam Lock Bridge
    • Lane Avenue Bridge
    • Lost River Bridge
    • Pomeroy Mason Bridge
    • Summersville Lake Canvas Bridge
    • U.S. Grant Bridge
    • ODOT Project 3012-00 – I-275 Design Build
    • Ledbetter Bridge Substructure
    • Ledbetter Bridge Truss Erection
    • Virginia 460 Connector Phase 1
  • Marine Structures
    • GIWW Sector Gate
    • Lock 9
    • Charleroi Lock and Dam
    • Chickamauga Lock
    • KY Lock
    • Olmsted
    • Jefferson Lakefront Pumping Stations 1-4
    • Inner Harbor Navigation Lake Borgne Surge Barrier – North and South T-walls
    • Inner Harbor Navigation Canal Hurricane Protection Project – Gulf Intracoastal Waterway Lake Borgne Surge Barrier
    • Kentucky Dam Lock Addition: Upstream Cofferdam
    • Kentucky Dam Miter Gate Install
    • Renovation of Kentucky River Lock and Dam #8
    • Markland Lock and Dam Tainter Gate Repairs
    • Montgomery Lock and Dam Gate Installation
    • Ohio River Lock and Dam #53 Dam Wicket Replacement
    • O’Shaughnessy Dam Bridge Replacement Project
  • Heavy-Civil
    • Smithland Earthen Cofferdam
    • Smithland Powerhouse
    • Southerly Waste Water Treatment Plant Raw Sewage Pump Building, Contract S-65
    • Southerly Waste Water Treatment Plant New Effluent Pump Station and Effluent Conduit, Contract S-71
    • Fort Washington Way Contracts 6, 8 and 12
    • ODOT 3008-00 I-75 / US62 Reconstruction Design-Build
  • Commercial
    • General Electric
    • Orange Barrel Media
    • Marathon Petroleum

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C.J. Mahan Construction Company, LLC

3458 Lewis Centre Way,
Grove City, OH 43123

P: 614.875.8200
F: 614.875.1175

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