Coleman Bridge HPU Integration

The Virginia Department of Transportation seeks a contractor to upgrade the HPU (Hydraulic Power Unit) integration at the Coleman Bridge. The scope includes modifying the far‑side movable grating HPU starter box, installing new PLC control cabinets on Pier 1N and on the far‑side span‑lock platform, removing existing fully‑seated movable‑grating limit switches, installing new fully‑seated and rotary‑cam limit switches, and fully integrating the new equipment with the existing PLC and control system. This effort is focused on electrical and control‑system upgrades at a bridge site, requiring expertise in PLC programming, electrical installation, and mechanical integration. • Modify existing HPU starter box and replace limit switches. • Install two new PLC control cabinets and associated wiring. • Integrate new hardware with existing bridge control systems. • Perform all work on‑site at Coleman Bridge with minimal disruption to traffic. • Complete within the solicitation window (published 30 Oct 2026, deadline 10 Nov 2026).