The City of Centennial commits to strategic and budgetary planning for the construction of new improvements and preservation of the City’s infrastructure.
Improvements may include street rehabilitation, road widening, new traffic signals, new recreational trails, parks and other pieces of infrastructure.
View Roadway Projects
There are two ways to view details on roadway projects taking place in Centennial. You can select projects linked in the Table of Contents above, or click the next and previous buttons below.
Timeline: Construction was completed Spring 2026.
Project Description: Arapahoe County has completed operational and safety improvements on Arapahoe Road between S. Lewiston Way and S. Buckley Road, helping address traffic congestion at the intersection of Olathe Street. The work extended turn lanes and closed the median break.
For more information and updates, please visit the Arapahoe County website.
Project Description: As the City’s major east/west corridors, Arapahoe Rd. serves as a main connection in the southern region. Improving sidewalk connectivity along Arapahoe Rd. between I-25 and Parker Rd. has been a focus.
Sidepaths are wider sidewalks typically twice the size of standard ones that allow for greater accessibility and additional room for people walking, biking, skating and more.
Where: Construction of these sidepaths will fill in gaps between S. Peoria St. and Jordan Rd. along with ADA curb ramp improvements. The project will also replace the timber fence along the Algonquin Acres neighborhood with brown/beige colored concrete fence. The finish was favored by residents in the project’s open house.
When: Construction is anticipated to begin Q3 2026.
Timeline: Project construction began April 2026 and is anticipated to be complete early Spring 2027.
Project Description: The City is constructing a new culvert and dedicated underpass for bicyclists and pedestrians on the Lone Tree Creek Trail at E. Arapahoe Road. This project will improve safety and connectivity by allowing trail users to travel beneath the roadway, eliminating the need to cross traffic at the existing Revere Parkway crosswalk.
Construction will impact traffic on E. Arapahoe Rd. with intermittent lane closures throughout the duration of the project. All left-turn movements at the intersection of E. Arapahoe Rd. and S. Revere Pkwy. are restricted, along with north-southbound through-travel across the intersection.
This project is 90% funded through state and federal funds, with a 10% match by the City.
For additional information and to subscribe for updates, please visit the Arapahoe Rd. at Lone Tree Creek Trail Project page.
Timeline: Construction started July 2025 and is anticipated to be complete Fall 2026.
Project Description: The City of Littleton is replacing a deteriorating metal culvert beneath Broadway, just north of Jamison Avenue, to prevent road failure and flooding concerns.
As part of the project, a pedestrian underpass will be added, connecting the east and west sections of the Lee Gulch Trail, that will allow for safer travel and connectivity in and out of the west side of Centennial, across the Broadway corridor.
For more information and updates, please visit the City of Littleton project page.
Project Description: In June 2021, the City of Centennial adopted the Colorado Boulevard Multimodal Corridor Study(PDF, 69MB) to improve safety and accessibility for all types of transportation along Colorado Boulevard between Orchard Road and County Line Road.
As the first major implementation of the 2021 Corridor Study’s recommendations, the City was awarded 90% of the funding to construct the 1-mile stretch between Arapahoe Road and Dry Creek Road. The project is currently in the design phase to reduce this portion of Colorado Blvd. to one lane in each direction with a center turn lane, with the remaining roadway space being repurposed for multi-use paths.
The City also conducted the Colorado Blvd. and Euclid Ave. Study which evaluates ways to improve traffic safety and operations for pedestrians, bicyclists, and motorists and the intersection of Colorado Blvd. and Euclid Ave.
Learn more about the studies, project updates and more on the Colorado Boulevard Multimodal Study page.
Project Timeline: Construction began September 2025 and is estimated to take 24 months.
Project Description: Douglas County is leading the County Line Road Widening and Reconstruction (University to Broadway) project. It includes a new traffic signal at the Clarkson Street / County Line Road intersection, a mill and overlay for the portion of the road within the City of Littleton located between Phillips Avenue and Broadway, as well as adding sidewalks.
For more information, visit Douglas County’s County Line Road Widening Project page. For current traffic impacts, visit Douglas County’s Cone Zone.
Project Description: The City plans to make operational intersection improvements at S. Havana St. and E. Easter Ave. to improve traffic flow, reduce delays and enhance safety for all users traveling through the corridor.
The project will introduce a displaced left-turn design, which allows left-turning vehicles to cross opposing traffic before reaching the intersection. Additional enhancements will include pedestrian and bicycle improvements to support safer and more efficient travel through the area.
This project was selected for funding by the Colorado Department of Transportation (CDOT) and the Denver Regional Council of Governments (DRCOG) as part of the 2024–2027 Transportation Improvement Program (TIP). Planning is currently underway and construction is anticipated to begin Spring 2027.
Additional information is available at Havana & Easter Intersectional Improvement Project.
Project Description: Centennial regularly conducts street rehabilitation throughout the City. Click below to view the Street Rehabilitation Program map and see current and upcoming projects.
Entity: City-led
View the Street Rehabilitation Projects Map