Acrow Bridge has recently completed two projects in the US state of South Dakota.
One of the projects involved the supply of new components, which has expanded the inventory of modular bridges available to South Dakota Department of Transportation (SDDOT). SDDOT has a pool of Acrow modular steel products for use in emergencies or for planned detours.
The new Acrow components were brought in for use on a planned detour on State Route 281 over the Maple River near Frederick. The temporary structure provided full traffic flow along this major artery in a rural area where detour routes are prohibitively long. SDDOT purchased a 49m long by 9m wide TDR3. In addition to being a longer structure than those already owned by the state, this newer bridge is AASHTO HL-93 load rated with new bridge-rail capability meeting the TL 3 or 4 type specifications. It has an epoxy-aggregate coated decking. The structure was installed with a crane-assisted method, and has now been removed with a full cantilever launch, accomplished in a very tight work area.
For a temporary structure on I-29 in north Sioux Falls, SDDOT used a 43m long by 9m wide Acrow 700XS bridge that it has owned for more than a decade and has used on several projects.
"South Dakota DOT has owned Acrow bridging for several years," said Tom Pinder, western sales manager at Acrow. "As per RFQ stipulations, contractors are required to contact us for on-site assistance and installation procedures that are tailor-fit to the location needs and contractor's capabilities. When the bridge is removed, Acrow is there again to assist in the process and do a final inventory back at the storage yard."
"The modular design of Acrow bridges provide a good solution for state DOTs needing cost-effective and rapid temporary bridging solutions," said Bill Killeen, President and CEO of Acrow Bridge. "Our customisable components can be engineered for many different applications, have an estimated life span of 75-100 years and are virtually maintenance-free."