Travel Advisory

Douglas County - Overnight lane and ramp closures are scheduled for Interstate 25 in Lone Tree the week of Sept. 21 as part of construction for the mobility hub. Motorists should prepare for delays as travel will get down to one to two lanes during the late night and early morning hours. All lanes will open before the morning commute.

Crews will set permanent barriers and re-stripe interstate lanes to prepare for upcoming construction to build a pedestrian bridge over the interstate.

Motorists are urged to heed the speed limit, give plenty of following distance, and watch for crews and equipment.

Traffic Impacts

Sunday night Sept. 21- northbound I-25 impacted:

• Triple lane closures on northbound I-25 from C-470 to Ridgegate Parkway. The first lane closed at 6 p.m., the second lane closed at 8 p.m. and the third lane closed at 10 p.m. Traffic will be reduced to one lane.
• The northbound I-25 to Lincoln Avenue off-ramp will close 6 p.m. with a detour route to East County Line Road to southbound I-25 toward the Lincoln Avenue exit. Refer to the northbound I-25 to Lincoln Avenue detour map below.
• The westbound Ridgegate Parkway to the northbound I-25 on-ramp will close 10 p.m. with a detour route to South Peoria Street north to Lincoln Avenue to the northbound on-ramp. Refer to the westbound Ridgegate Parkway detour map below.
• Speeds will be reduced to 65 MPH in the northbound lanes.
• All lanes and the ramps will re-open by 6 a.m., Monday, Sept. 22.

Monday night, Sept. 22 - southbound I-25 impacted:

• Double lane closures on southbound I-25 from C-470 to Ridgegate Parkway with the first lane closed at 7 p.m. and the second lane closed at 8 p.m. Traffic will be reduced to one lane.
• The Lincoln Avenue to southbound I-25 on-ramps will close 6 p.m. with a detour route east to South Peoria Street, south to Ridgegate Parkway and west to the I-25 on-ramp. Refer to the detour map below.
• Speeds will be reduced to 55 MPH in southbound lanes.
• All lanes and the ramps will re-open at 6 a.m. Tuesday, Sept. 23.
• The project team will re-stripe north and southbound lanes into a new configuration on Sunday and Monday nights.

Tuesday night, Sept. 23 - north and southbound I-25 impacted:

• Double left lane closures on north and southbound I-25 from C-470 to Ridgegate Parkway starting at 8 p.m. Traffic will be reduced to two lanes in each direction while crews set median barriers.
• All lanes will re-open to traffic at 6 a.m., Wednesday, Sept. 24.

Drivers can anticipate up to 20-minute delays between 6 p.m. and 10 p.m. Sunday, Monday and Tuesday nights.

Depending on weather, overnight construction activities may continue into Wednesday night. Please check COtrip.org for real-time lane closure updates. All lane and ramp closures will take place overnight and reopen during the day.

Project Background

The Lone Tree mobility hub is the newest mobility hub to undergo construction, connecting to a network of hubs along I-25 from Fort Collins to Pueblo. This transit improvement project will consist of constructing slip ramps along the I-25 northbound off-ramp and southbound on-ramp just south of Lincoln Avenue for use by Bustang transit services. Additionally, the project team will build a pedestrian bridge over I-25 that connects the two transit stops for pedestrian and bicycle access. Pedestrian ramps and stairs will be provided on the west side of the mobility hub between I-25 and Trainstation Circle. Other infrastructure upgrades will include bus shelters, sidewalks and a passenger pick-up and drop-off area. Construction started in May and is scheduled for completion in summer 2026.

Project Information

For additional information about this project:

• Project Website: codot.gov/projects/i25lonetreemobilityhub
• Project Hotline: 303-392-1850
• Project Email: [email protected]

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:

• Road conditions and travel information: COtrip.org
• Download the COtrip Planner app: bit.ly/COtripapp
• Sign up for project or travel alerts: bit.ly/COnewsalerts
• Check scheduled construction lane closures: bit.ly/laneclosures
• Connect with @ColoradoDOT on social media: X, Facebook, Instagram and YouTube

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!