Traffic Impacts

View the Changes to Local Frontage Roads Factsheet

Construction Activities & Impacts

CLOSURE OF CO 56 OVER I-25 | Starting Sunday, Aug. 1

Starting as soon as Sunday, Aug. 1 at 9 p.m., the Colorado Department of Transportation (CDOT) will temporarily close the Weld County Road 44/Colorado Highway 56 bridge over I-25 for no more than 140 days.
 
The northbound I-25 on- and off-ramps at CO 56 will close approximately five days later for a period no longer than 75 days, and the southbound I-25 on- and off-ramps will have minor intermittent nighttime and weekend closures.
 
This closure is vital to reconfiguring this interchange to a better layout in an economical way. Without the 140-day closure, the flipping of the interchange would not be possible.

Berthoud to Johnstown

There will be temporary full closures of Weld County Road 46 at I-25 starting Monday at 7 a.m. until Thursday at 5 p.m. to install new pipe across WCR 46.
 
Alternating single lane closures will start Sunday at 4 a.m. until Monday at noon on Larimer County Road 16 at I-25 to pour the new concrete bridge deck.
 
Monday to Saturday, 7:30 a.m. to 5 p.m., flagging operations with alternating single lane and shoulder closures will be in place on westbound Weld County Road 44 to allow trucks access to the job site.
 
There will be a full closure of Larimer County Road 14 at I-25 starting Monday, July 26, at 7 a.m., until Tuesday, July 27, at 5 p.m., to pour a new concrete bridge deck.

Johnstown to Fort Collins

To demolish the western span of the existing Great Western Railroad bridge and roll in the new span, a full closure of the Larimer County Road 20E bridge over I-25 is currently in place and will continue until 5 a.m., Monday. Northbound County Road 20E bridge traffic over I-25 will detour north on Boyd Lake Avenue to US Highway 34 then turn east and continue over I-25. Southbound traffic will continue south on Boyd Lake Avenue to County Road 9E and continue to Colorado Highway 402, turn east, and continue over I-25. 

Full closures of Prospect Road over I-25, southbound I-25 on- and off-ramps, and the northbound I-25 off-ramp at Exit 268/ Prospect Road will be in effect from 9 p.m., tonight, until 5 a.m., Monday, to shift interchange traffic into its final configuration on the new portion of the Prospect Road bridge. Eastbound Prospect Road and I-25 traffic, west of I-25, will go north on the SW Frontage Road to Mulberry Street (Colorado Highway 14) and turn right. Continue east to access the I-25 on-ramps or, to access Prospect Road, continue east to County Road 5 and turn right, go south on County Road 5 to Prospect Road. Westbound Prospect Road and southbound I-25 traffic, east of I-25, will take northbound I-25 to Exit 269B/ westbound Mulberry Street (CO 14). Continue west to access southbound I-25 or, to access Prospect Road, continue west to the SW Frontage Road and turn left, go south on the SW Frontage Road to Prospect Road.

To construct detours along the I-25 median, single lane closures will take place on I-25 from Kechter Road to north of Prospect Road nightly, from 9 p.m. to 5 a.m., Sunday through Saturday.