Major I-25 overnight closures at Lone Tree for emergency bridge repairs through June

Travel Advisory

May 27, 2021 - Central/Eastern Colorado - 18-hour full NB I-25 closure weekend of June 4, up to two-hour delays, motorists are urged to avoid the area during closures

LONE TREE -  There will be major traffic impacts, mostly overnight, on I-25 in the Lone Tree area south of Denver in June. The Colorado Department of Transportation along with contractor Kraemer North America will replace part of the Sky Ridge Avenue Bridge between Ridgegate Parkway and Lincoln Avenue, over I-25, that was struck by a commercial truck in February.  The most extensive impacts will be in early June when northbound I-25 will be closed for 18 hours from 7 p.m. Saturday night, June 5 through 1 p.m. Sunday, June 6.  Two inside lanes of southbound I-25 will also be closed.   There are no further anticipated daytime full highway closures, but full overnight closures will continue through many nights in June. 

A detour will be in place for northbound travel.  Significant delays are expected for both north and southbound.  Motorists are urged to avoid traveling in the area during the closures (see schedule and detour map below). 

To ensure the structure’s safety, CDOT will replace the portion of the bridge that was damaged. Work will involve taking down part of the structure and completely replacing it with a new girder and bridge deck.  In advance of the work, CDOT has closed an auxiliary lane in the project area for staging equipment.  All work is scheduled to be finished prior to the Fourth of July holiday weekend. 

Closures and Traffic Impacts

Beginning Wednesday, May 19 at 8 p.m. until the project is finished in late June or early July, there will be a 24/7 closure of an auxiliary lane on northbound I-25 between Ridgegate Parkway and Lincoln Avenue. This space is needed for crews to stage equipment for bridge repairs. This closure may cause some minor delays during peak travel periods.

Full overnight closures of northbound I-25 and double lane closures of southbound I-25 from Ridgegate Parkway to Lincoln Avenue scheduled to occur the following times in June. See detour map below the chart. 





Friday night, June 4, from 9 p.m. to 5 a.m., Saturday, June 5

FULL closure of northbound I-25 and double lane closures on southbound I-25 from Ridgegate Parkway to Lincoln Avenue

Up to 20 minutes on the northbound side and less impacts on the southbound side.

Bridge demolition work to take a portion of the bridge down for replacement. 

Saturday, June 5, 5 a.m. to 7 p.m. 

Single left lane closure of northbound I-25

Up to 30 minutes from 1 p.m. until the full closures begin 7 p.m., and then there will be very heavy delays. 

Saturday night, June 5, from 7 p.m. until 1 pm., Sunday, June 6

FULL closure of northbound I-25 and double lane closures on southbound I-25 from Ridgegate Parkway to Lincoln Avenue

Extreme delays of up to two hours on the northbound side and more than 45 minutes on the southbound side.  Heaviest impacts will be Saturday evening and Sunday mid-morning through the afternoon. Motorists should avoid this area during closures. 

Overnights, Monday June 7 to Saturday, June 12 from 9 p.m. to 5 a.m. (closures were scheduled for Sunday night June 6, but are not needed due to demo work completed ahead of schedule).

Same closures as above

Up to 20 minutes on the northbound side and less impacts on the southbound side.

Bridge replacement, setting a new girder and installing deck panels

Overnights Tuesday, June 15 and Thursday, June 24, from 9 p.m. to 5 a.m. 

Full closure of  northbound I-25, all lanes open on southbound I-25

Complete repairs with pouring the concrete deck

The Sky Ridge Avenue bridge is closed to traffic. 

The schedule above is subject to change depending on weather and other unforeseen circumstances.  Check the info sources at the bottom of the release for the latest schedule information and road conditions. 


A detour will be in place for northbound traffic (see map).  This detour will take about five to seven minutes with total delays expected to be from fifteen to twenty minutes.  Delays are expected to be up to two hours Saturday evening, June 5 through Sunday afternoon, June 6.  Note: this detour was used when the Sky Ridge Avenue bridge was built.  

Skyridge Bridge Map

Work will replace the damaged section of Sky Ridge Avenue bridge above I-25 in Lone Tree. 

Skyridge Bridge Damage

Stay Informed

More information is available at: 

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow for the Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.

  • Stay Alert! Expect the unexpected.

  • Watch for workers. Drive with caution.

  • Anticipate lane shifts and merge when directed to do so

  • Expect delays, especially during peak travel times.

  • Allow ample space between you and the car in front of you.

  • Avoid using mobile devices such as phones while driving