Project Description

The Utah Department of Transportation will replace three bridges in Riverdale, including 4400 South over I-15 and two ramp bridges carrying traffic to and from I-15 to I-84 over 4400 South. This work began August 11, 2025. 

4400 South Bridge over I-15 Closure

The closure of 4400 South between 1600 West/Airport Road and Cozy Dale Drive will continue for the next few months while crews demolish and rebuild the bridge over I-15.

4400 South (under I-84) is also closed between 1250 West/Parker Drive and Cozy Dale Drive while crews construct the bridge walls. This section will reopen as soon as Friday, October 3. One lane in each direction will be open during the day. However, traffic will be limited to one lane overnight from 7 p.m. to 7 a.m. Flaggers will direct traffic. Travelers can expect delays of 15 minutes or more until both lanes open in the morning.

DURING CONSTRUCTION:

• Emergency vehicles WILL have access on 4400 South Parker Drive and Cozy Dale Drive during the closure
• Pedestrian access remains OPEN on the pedestrian overpass
• 4400 South (to the east), 900 West, Riverdale Road and Cozy Dale Drive should be used as detour routes
• UTA’s Route 640 will be suspended along 4400 South and 1900 South. Riders can reach Route 640 at Riverdale Road between 1150 West and 1900 West
• Patrons of the Ogden Airport should use 31st Street to access the airport in the timeliest manner.

See the detour map below. 

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To improve quality of life and accommodate the ever-growing needs of our state, UDOT is committed to keeping Utah moving both now and in the future. We monitor the health of our infrastructure because safety is our priority. Inspections allow us to act well in advance to replace structures on their way towards disrepair. We are partnering with the cities of Roy and Riverdale to make these improvements to local infrastructure to reduce disruption to the community.