Steel Bridge Decking

Big R Manufacturing steel decking Big R Manufacturing roll forms 4 ¼"-deep bridge flooring using Grade 50 steel in either pre-galvanized or bare steel. If the latter is used, it can be prime painted.

Steel decked bridges can be built in any weather conditions. The steel deck is used in new construction or to rehabilitate existing structures.

Bridge Deck Fastening

  • Weld each piece to stringer with deck thickness x 3" fillet welds.
  • Weld between stringers at overlap with 3" fillet weld every 30"± or between stringers.
  • End splices are to be staggered and located over stringers. Crests of end splices are to be butt welded.

Asphalt Surface Installation Instructions

  • Clean metal surfaces of all foreign matter.
  • Apply tack coat over the deck surface.
  • Fill and compact all corrugation troughs with asphalt to the top of the deck.
  • Overlay with a leveling course and additional courses as necessary to achieve a final wearing course. Compact to required density.

Steel Bridge Deck Profile

steel bridge deck profile

Engineering Data, 12" x 4 1/4" Bridge Decking

steel deck engineering data

*Net span is the clear span between stringer flanges.

Print Version
240 KB PDF

welding steel deck

Welding steel deck in the bridge fabrication plant.

steel decking on a rehabilitation project

Installation of steel decking on a Colorado DOT rehabilitation project.

steel decking with asphalt surface

Steel decking is covered with an asphalt surface.

nested steel decking

Steel decking is nested for easy shipping.