Overnight full closure of northbound I-225 at 6th Avenue

Travel Advisory

Oct. 22, 2025 - Denver Metro/Central Colorado - Full closure planned Oct. 26 and 27 for bridge rehabilitation work

Aurora — Motorists are urged to plan ahead for a full overnight closure of northbound Interstate 225 at 6th Avenue on Oct. 26 and 27. The Colorado Department of Transportation and its contractor, Structures Inc., are rehabilitating two I-225 bridges over 6th and 2nd avenues. This closure will allow crews to put down asphalt on the bridges’ surface to help even out the pavement. This work is part of ongoing efforts to rehabilitate these two bridges. Later in the week there will be overnight double lane closures on north and southbound I-225.

The project team collaborated on several approaches to decrease the full closure from five to two nights.

Traffic Impacts

Overnight Sunday, Oct. 26 and Monday, Oct. 27

  • Northbound I-225 closed at 6th Avenue from 9 p.m. to 5 a.m.
  • Detour signage will be posted to guide motorists through the detour route. Motorists should plan for up to a 20-minute delay starting at 9 p.m. when taking the detour
  • Local traffic will be directed to exit northbound I-225 toward westbound 6th Avenue, go through the traffic light and back onto northbound I-225
  • Commercial vehicles will be routed around this closure via northbound C-470 to eastbound I-70
  • Southbound I-225 will remain open

Map of northbound I-225 at East 6th Avenue closure and detour
Map of northbound I-225 at East 6th Avenue closure and detour

Overnight Monday, Oct. 27 and Tuesday, Oct. 28

  • If a full closure on northbound I-225 is not needed Monday night, there will be double lane closures on southbound I-225 at 2nd and 6th avenues. The first lane will close at 7 p.m. followed by a double lane closure at 10 p.m.
  • All lanes will re-open to traffic at 5 a.m.

Overnight Wednesday, Oct. 29 and Thursday, Oct. 30

  • Northbound I-225 single lane closure at 2nd and 6th avenues starting at 7 p.m. followed by a double lane closure at 10 p.m.
  • All lanes will re-open to traffic at 5 a.m.

What Motorists Need to Know

  • Plan for extra time as delays to take the detour route will be up to 20 minutes on the nights of full northbound I-225 closures
  • Motorists are urged to drive with extra caution through the work zone, heed the signs, watch for crew members and equipment, follow posted speed limits and give plenty of following distance
  • Construction schedules can change depending on weather and other factors. To keep apprised of the latest lane closures and travel impacts, visit COtrip.org

The project is expected to be complete by the end of November 2025.

Project Information

For additional information about this project:

Know Before You Go

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.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts and merge when directed to do so.
  • Be patient!

Download the COtrip App!

The new free COtrip Planner mobile app was designed to meet the growing trend of information on mobile and tablet devices for the traveling public. The COtrip Planner app provides statewide, real-time traffic information, and works on mobile devices that operate on the iOS and Android platforms. Visit the Google Play Store (Android devices) or the Apple Store (iOS devices) to download!