Overnight ramp closures are scheduled for Interstate 25 in Lone Tree, Colorado, starting Sunday evening and continuing through Tuesday night. These closures are necessary for the ongoing construction of a new pedestrian bridge, which involves installing barriers and re-striping lanes between C-470 and Ridgegate Parkway. Drivers should prepare for potential delays and follow marked detours.
Key Takeaways
- I-25 ramp closures in Lone Tree begin Sunday, September 21, and run through Tuesday night.
- Work involves barrier installation and lane re-striping for a new pedestrian bridge.
- Specific ramps at Lincoln Avenue and Ridgegate Parkway will close overnight.
- Drivers should expect delays up to 20 minutes and use detours.
- All closed ramps will reopen by 6 a.m. each morning.
Overnight Work Details for I-25 in Lone Tree
Construction crews are implementing overnight ramp closures on Interstate 25 as part of a significant infrastructure project. This work supports the development of a new pedestrian bridge, which will enhance connectivity in the Lone Tree area. The closures are planned to minimize disruption during peak travel times.
The project involves installing new median barriers and re-striping existing lanes. These tasks require sections of the highway and its ramps to be temporarily closed for worker safety and efficient operations. The City of Lone Tree Government announced these upcoming closures on Friday, September 19, 2025.
Project Fact
The new pedestrian bridge is designed to improve safety and access for pedestrians and cyclists crossing I-25 in Lone Tree.
Sunday Night Closures and Detours
On Sunday, September 21, drivers should anticipate specific ramp closures and detours. The northbound I-25 off-ramp to Lincoln Avenue will close at 8 p.m. This closure is critical for the initial phase of barrier installation.
A detour will guide traffic from East County Line Road to southbound I-25, then to the Lincoln Avenue exit. This route ensures drivers can still access Lincoln Avenue while the ramp is closed. Delays of up to 20 minutes are possible between 6 p.m. and 10 p.m. on Sunday.
"Drivers should plan their routes accordingly and allow extra travel time, especially during the evening hours," a project spokesperson advised.
Later on Sunday, at 10 p.m., the westbound Ridgegate Parkway on-ramp to northbound I-25 will also close. The detour for this closure directs traffic from South Peoria Street to Lincoln Avenue, then to northbound I-25. All ramps closed on Sunday night are expected to reopen by 6 a.m. on Monday morning.
Monday Evening Ramp Closures
Monday, September 22, will see additional ramp closures affecting southbound I-25. The westbound Lincoln Avenue on-ramp to southbound I-25 will close starting at 6 p.m. This early closure allows crews to begin work on this section.
Following this, the eastbound Lincoln Avenue on-ramp to southbound I-25 will close at 8 p.m. These closures are necessary for continued work on the pedestrian bridge infrastructure. Drivers needing to access southbound I-25 from Lincoln Avenue will have a specific detour to follow.
Background Information
The pedestrian bridge project is part of a larger initiative to enhance transportation infrastructure and pedestrian safety in the growing Lone Tree community.
The detour for Monday's closures will direct traffic from Lincoln Avenue east, to South Peoria Street south, to Ridgegate Parkway west, and finally to the southbound I-25 on-ramp. These detours are clearly marked with signage to assist drivers. Like Sunday, all ramps will reopen by 6 a.m. on Tuesday.
Tuesday Operations and Traffic Adjustments
For Tuesday, September 23, no specific ramp closures are currently scheduled. However, drivers should still expect changes to traffic flow. Lane shifts will be in place on I-25 as crews continue their work on median barrier installation. These shifts require drivers to be attentive and follow new lane configurations.
Reduced speed limits will also be enforced in construction zones to ensure the safety of workers and motorists. According to COtrip.org, these temporary speed reductions are common during active construction. Drivers are encouraged to check COtrip.org for the most current traffic conditions and updates before traveling.
This phase of the project is crucial for the overall progress of the pedestrian bridge. The new bridge aims to provide a safe crossing for pedestrians and cyclists, connecting different parts of Lone Tree over the busy interstate. The construction team is working efficiently to complete these tasks with minimal prolonged impact on traffic.
Previous Incident on I-225 in Aurora
Separately, on Friday afternoon, a fatal crash occurred on Interstate 225 in Aurora, Colorado. Aurora Police reported that a woman riding a motorcycle died in the incident. Officers responded to the scene around 3 p.m.
The initial investigation indicates that the woman on the motorcycle, traveling northbound on I-225 at Smith Road, collided with a vehicle in front of her that was slowing for traffic. Following this collision, a second northbound vehicle, possibly a semi-truck, struck her. A fourth vehicle was also involved in the chain of events.
The woman was transported to a hospital but later died from her injuries. Police stated that all individuals involved in the crash remained at the scene and cooperated with the investigation. No other injuries were reported. Investigators do not believe speed or intoxication were factors in this incident.
Northbound I-225 at Smith Road was closed for approximately two hours after the crash. Traffic was diverted to 17th Place during the closure. The lanes reopened around 4:45 p.m. on Friday.
