A 354-ft-long, two-span steel bridge was lifted, rolled and set into construction history on March 26. With more than 1,000 spectators on hand, the nearly 4-million-lb structure traveled about 500 ft across Interstate 15 in Utah on a Self-Propelled Modular Transporter (SPMT), a vehicle-pulled platform supported by remote-controlled wheels and hydraulics. Eight hours later, the longest-ever SPMT-assisted bridge move in the Western Hemisphere was complete and ready for vehicular traffic.

Thirteen states have used SPMTs to roll pre-built bridge structures into place quickly, but the Utah Dept. of Transportation is the established leader. The March 26 move of the Sam White Bridge marks the 23rd time UDOT has used SPMTs.