Galvanized steel bridge SOUTH DAKOTA

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Bridge Length: The state of South Dakota used two of the Acrow bridges they own and supplied those to the contractors for use; 140 ft. long DDR2 for the Sioux Falls location and 160 ft. long TDR3 for the Maple River location. Bridge Width: Both bridges are 30 feet wide (9.125M) bridge, two lanes with shoulders. Live Load: The Sioux Falls location was the older HS-20 rated live load bridge, while The newest bridge is the 160 ft. long structure used at Maple River that also included guard rail posts and tube rails was designed in accordance with the latest edition of the AASHTO LRFD bridge design specifications to HL93 vehicular. Deck Surface: Epoxy non-skid coated deck Bridge Finish: All major components galvanized to AASHTO M111 – ASTM A 123 All bolts are hot dipped galvanized All pins are electro galvanized Bridge Erection: Both bridge structures were installed using a crane assisted cantilevered launching method provided by Acrow. Bridge Design: Panel chords, diagonals, verticals, panel reinforcing chords, rakers to AASHTO M223 GD 65 Raker brace, transom, top chord brace, sway brace, transom brace, diagonal chord brace to AASHTO GD 50 Panel pins to ASTM A 193 GD b7 Bolts to AASHTO M164M – A325