U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000

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Construction

Photos

2006 I-4/Graves Avenue SPMT Bridge Move

Self-propelled modular transporters (SPMTs) carry a bridge span down a road. The operator of the computer that controls the SPMT movement is walking behind the SPMTs. Self-propelled modular transporters (SPMTs) carry a bridge span down a road. The operator of the computer that controls the SPMT movement is walking behind the SPMTs, along with three other construction workers monitoring progress. Two new bridge spans are shown in a staging area where they were constructed.
A bridge span is being constructed at a staging area. A new bridge span supported by self-propelled modular transporters is shown in a staging area where the span was constructed near the bridge location. Self-propelled modular transporters carry a bridge span up a road to the bridge site. A couple dozen people with hard hats and safety vests are shown in the foreground as they observe the demonstration.
Self-propelled modular transporters carry a bridge span up a road to the bridge site during nighttime construction. Four construction workers with safety vests monitor progress. A close-up of a self-propelled modular transporter is shown underneath one end of a bridge span just after the SPMT lowered the span into position on the interior bridge support.  

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Updated: 06/27/2017
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Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000