Traffic Impacts

The speed limit on the project has been lowered to 65 mph. Please obey speed limit signs.

Sunday, 9 p.m. to 5 a.m., there will be a northbound I-25 right lane closure at Weld County Road 38 to allow crews to reset safety barriers.

Weld County Road 38 over I-25

Beginning Monday, WCR 38 over I-25, east of Mead, will be closed through December 2025 to allow crews to reconstruct the bridge over the highway. Work will include demolishing the current aging bridge, constructing new concrete caissons, setting new bridge girders and deck panels and pouring a new concrete road surface. The new bridge will be built in the same general footprint as the current bridge in coordination with the widening of I-25 below, maintaining the existing road alignment and increasing cost effectiveness.

Detours will be in place:

• Eastbound WCR 38 traffic will take Weld County Road 7 south to Weld County Road 34, turn east to the I-25 E. Frontage Road and turn north to WCR 38.
• Westbound WCR 38 traffic will take the I-25 E. Frontage Road south to WCR 34, turn west to WCR 7, and turn north to WCR 38.

I-25 Under Weld County Road 38

Monday and Tuesday, 9 p.m. to 5 a.m., I-25 under WCR 38 will be temporarily closed for bridge demolition. A contingency night is also scheduled for Wednesday. Detours will be in place:

• Southbound I-25 traffic will exit at Colorado Highway 402, travel west and turn south on US Highway 287, turn east onto Colorado Highway 66 and re-enter I-25 south.
• Northbound I-25 traffic will be rerouted using temporary detour off- and on-ramps merging with the I-25 E. Frontage Road. No turning movements will be allowed on or off WCR 38 during this time.
• Southbound I-25 E. Frontage Road south of WCR 38 will be closed. Southbound traffic will turn onto Weld County Road 40, travel east to Colorado Boulevard, turn west onto WCR 34 and turn south onto the Frontage Road.

More information on the Weld County Road 38 bridge demolition and reconstruction:

• The current Weld County Road 38 bridge was built in 1960, and a larger bridge is needed to span the widened I-25 section. The new bridge will have an 8-foot-wide sidewalk for multimodal connections over I-25. The new bridge will also be built “on alignment,” or in the same position as the current bridge, which was decided in coordination with the Town of Mead. Usually, CDOT replaces a bridge directly adjacent to the old bridge, to allow the old bridge to be used during construction of the new bridge. The demolition of the current bridge and the complete construction and roadway tie in of the new bridge will be completed while the WCR 38 east/west connection over the interstate is closed from June to December 2025.
• CDOT is aware this six-month bridge outage is a significant inconvenience for daily users. Ultimately, this decision will invest money in permanent infrastructure in another area of the project and save Colorado taxpayer money. CDOT will prioritize keeping the Weld County Road 34 and I-25 interchange open during the WCR 38 bridge closure to help facilitate east/west movement across the interstate.

Additional Closures:

Monday through Saturday, 7 a.m. to 5 p.m., there will be brief intermittent closures on WCR 34 near I-25 controlled by flaggers to allow truck access for dirt hauling. 

The temporary closure of Weld County Road 32 under I-25, scheduled for this week, is postponed until further notice.

A temporary closure of Valley Road is ongoing to allow crews to reconstruct the bridge over the road. This closure will be in place through summer 2025. Motorists should plan accordingly, as no detour route is available.

Southbound I-25 traffic shifted to the northbound lanes between Colorado Highway 56 and CO 66 into a head-to-head configuration and will be in place through 2025.

Approximately one mile of the southbound I-25 Express Lane, between mile points 251 and 250, from approximately WCR 44 to WCR 46, is closed through late 2027.