In an effort to improve traffic flow and safety at the intersection of state Route 39 (SR-39) and Main Street (100 South) in Huntsville, the Utah Department of Transportation (UDOT) is constructing a new roundabout. Project completion is expected by late fall 2025.

During construction, crews will strive to maintain all-way traffic through the intersection. Drivers should expect intermittent thru and turn lane closures, flagging operations and minor travel delays. To help minimize delays on weekends, no traffic restrictions will be in place from 2 p.m. on Fridays through 5 a.m. on Mondays. All travel lanes will also be open during holiday timeframes.

The new roundabout will feature a free right-turn (no stop required) for northbound SR-39 traffic to eastbound SR-39 towards Monte Cristo. Also, a little larger roundabout design than is typical will be built to accommodate larger recreational traffic and trailers that travel frequently through the area.

The project will make history as the first roundabout constructed on a state road by UDOT’s Region One, which includes the six counties north of Salt Lake City.

Construction Impacts

• Motorists should expect intermittent thru and turn lane closures, flagging operations and minor travel delays.
• Main Street (100 South) has reopened to all traffic between SR-39 (7800 East) and 7700 East in Huntsville.
• East/westbound thru-traffic at the Main Street/SR-39 intersection is closed through approximately late September  as crews complete the center section of the new roundabout. 
• Left-turns are closed on all four sides of the Main Street/SR-39 intersection through approximately late September  as crews complete the center section of the new roundabout. 
• Northbound and southbound SR-39 traffic is open through the Main Street/SR-39 intersection in the new roundabout configuration. Please reduce speeds, watch for oncoming traffic and obey all traffic signs and flaggers in the work zone.
• The SR-39 speed limit approaching the intersection has been reduced to 20 mph. Please reduce speeds and use caution driving through the work zone.
• To help minimize traffic delays on weekends, traffic restrictions will be minimized as much as possible (unless necessary for public safety and/or to facilitate restrictive construction activities such as concrete curing).

Ogden Valley pedestrians and cyclists are advised that the Pineview Loop Path is closed on the northwest corner of the Main Street (100 South) and SR-39 intersection in Huntsville.

• No detour route is available around the work zone for trail users to access into Huntsville Town.
• To maintain public safety during the closure, trail users are not permitted through the intersection on the roadway as there will be excavation work and heavy equipment in the work zone. Thank you for your cooperation.

Updated Information: 

Ogden Valley drivers are advised of planned and current traffic control adjustments at the intersection of SR-39/Main Street (100 South) in Huntsville for UDOT's roundabout construction: 

• Temporary traffic lights will be in place for eastbound/westbound traffic at the Main Street/SR-39 intersection from September 8-12 as crews asphalt pave sections in the work zone.
• East/westbound thru-traffic at the Main Street/SR-39 intersection is closed through late September as crews complete the center section of the new roundabout. 
• Northbound and southbound SR-39 thru-traffic is open through the Main Street/SR-39 intersection in the new roundabout configuration. Please reduce speeds, watch for oncoming traffic and obey all traffic signs and flaggers in the work zone.
• The SR-39 speed limit approaching the intersection has been reduced to 20 mph. Please reduce speeds and use caution driving through the work zone.
• Substantial project completion is expected by the end of October 2025.

*Construction schedules are subject to change due to weather conditions, equipment/supply issues and other unforeseen circumstances.

MORE INFORMATION

UDOT Huntsville Roundabout Public Involvement Team

Hotline: 385-493-0813

Email: huntsvilleroundabout@utah.gov

Web: udotinput.utah.gov/huntsvilleroundabout