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NPHQ > Awards & Success
Stories > 2008 Winner
Huge Modular Transporters Reduce Bridge Replacement to Hours and Save Public $4 Million
I-215 4500 South Structure Project Uses Innovative Technique to Improve Service to Driving PublicUsing Self-Propelled Modular Transporters (SPMTs) similar to those used by NASA to transport the Space Shuttle, UDOT removed a deteriorated four million pound bridge in one piece and replaced it with a new three million pound, pre-built bridge that was lifted and moved into place within a few hours, over a single weekend.
This resulted in reduction in the cost of delay to the public of approximately $4 million. The use of Accelerated Bridge Construction technology positively impacted Utah citizens well beyond the traveling public because in addition to reducing traffic disruption, it increased work zone safety and reduced harmful emissions. Prefabricated bridges are easier to construct, the process improves the overall quality of the finished product, the danger of agency employees and contractors working “over traffic” is significantly reduced, and the life of the finished bridge is extended. UDOT plans to use SPMT technology in coming years to replace fourteen bridges spanning the I-80 corridor.
Introduction of these innovative techniques required strong leadership coupled with entrepreneurial spirit, a willingness to take calculated risks and a desire to constantly improve service to the Utah driving public. And, the project made national news, showcasing how inventive UDOT is in carrying out its commitment to customers.
To learn more about Utah's accelerated bridge construction program: http://www.udot.utah.gov.
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