The Utah Department of Transportation has reported significant progress on the U.S. 189 construction project near Deer Creek Reservoir, despite an extended timeline for completion. According to a October 12 report, the project aims to improve the transportation corridor between Utah Valley and Heber Valley through grade separation and lane widening.
The project timeline has been extended from an original estimated deadline of fall 2027 to 2028. Wyatt Woolley, a spokesman for UDOT Region 3, stated the delay is due to geotechnical construction challenges encountered while adding a new road along the hillside. Crews encountered large boulders that proved difficult to excavate while drilling anchors to stabilize slopes.
To date, UDOT has placed 12.2 miles of drilled anchors into the ground to prevent rock falls and has moved 1 million cubic yards of earth. Woolley noted that crews have worked to keep U.S. 189 open during this process, only stopping for 15 to 20 minutes during blasting sessions.
The construction involves widening U.S. 189 to two lanes in each direction between Wallsburg and Charleston and creating a grade separation between northbound and southbound lanes. Last week, UDOT shifted drivers onto a newly constructed northbound lane.
Future work will focus on the highway's southbound side and stabilizing the steep slopes located between the new northbound lane and the southbound lane. Additionally, a traffic light is scheduled to be built at the intersection of U.S. 189 and S.R. 113 in Charleston at some point next year to assist traffic flow.
The primary goals of the project are to alleviate traffic on the Provo Canyon route used by commuters traveling between Utah County and the Wasatch Back, and to improve safety. The existing road currently features only one lane in each direction next to Deer Creek with little shoulder space and no center median. The new design will provide a physical separation to reduce the chances of head-on collisions and improve safety around bends and turns.
While traffic volume has remained relatively consistent, Woolley noted that events like Swiss Days can cause significant increases in traffic toward Midway. The project is intended to provide a significant improvement to traffic flow throughout that section of the canyon.
