Portable Detour Bridges

US-2 Detour Bridge - WSDOT @ Spokan Big R portable steel bridges are ideal for construction detours and other temporary or permanent applications. Installation is often complete within hours after the bridge arrives at the job site. If a crane is not accessible, excavators or loaders may be used to place the bridge.

A variety of loadings from HS-20 to off-highway trucks can be accommodated. Our portable steel bridges, in both single and multiple lane widths, are available for lease or purchase.

Standard Features

  • Heavy duty loading
  • Galvanized steel deck
  • Lengths from 20' to 80'
  • Weathering steel structurals
  • Bearing plates and pads
  • Curb system
  • Timber running plank
  • 14'-0" width

Optional Features

  • Painted structurals
  • Special paint for coastal or tropical areas
  • Galvanized steel back walls
  • Precast concrete sills
  • Bridge rail system
  • Any width (two or more sections)
  • Bolt-A-Bin® abutments
  • Clear spans up to 150'

Bridges 60' and longer can also be provided with L/300 deflection, resulting in substantial weight and cost reductions.

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