Overview
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.
Project Description: This project was selected to receive funding as part of the Safer Main Streets Initiative for the design of the new traffic signal and multimodal improvements at Arapahoe Rd. and Clarkson St.
Project Update: Construction will begin in May 2025 and is estimated to conclude by Fall 2025.
Learn more about this project on the Arapahoe & Clarkson Traffic Signal page.
Project Description: Arapahoe County has identified operational and safety improvements for Arapahoe Road between S. Lewiston Way and S. Buckley Rd. Operational and safety concerns identified include traffic congestion that blocks the eastbound to northbound left-turn lane movement to Olathe St. As well as eastbound Arapahoe Rd. to northbound Buckley Rd. left-turners, causing additional congestion.
Arapahoe Road Improvement Recommendations Include: 1) Extending the turn lanes for eastbound Arapahoe Rd. to northbound S. Buckley Rd. 2) Closing the median break at Olathe St. 3) Extending the turn lanes for westbound Arapahoe Rd. to southbound S. Lewiston Way.
For more information and updates please visit the Arapahoe County website.
Project Description: As the City’s only major east/west road and a main arterial in the southern region, sidewalk connectivity along Arapahoe Rd. between I-25 and Parker Rd. has been a focus. Side-paths are larger sidewalks, typically double the size, which allows for more accessibility, modes of transportation and additional room for people to come and go. Construction of these side-paths to fill in gaps between existing sidewalks along with other improvements include ADA curb ramps and bus stop enhancements. Construction is anticipated to begin in 2025.
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.
Estimated Timeline: The project will go out to bid April 2025 with construction estimated to start in June 2025 continuing through Labor Day 2025.
Project Description: The City is replacing the cedar fence on the north side of County Line Road, between Willow Creek Trail and Willow Creek Shopping Center, with a more durable composite TREX fence.
The new fence will be in in the same approximate location and height as the existing fence, and work will include site clearing, demolition of the old fence, construction of the new fence, and site restoration. The new composite fencing will require less maintenance and has a longer life span.
Estimated Start Date: Construction estimated to begin early 2025
Project Manager: Jeff Dankenbring
Budget: Estimated Construction Cost over $25M, DRCOG TIP grant $12.4M, Centennial contribution $3M
Project Description: Douglas County is leading the County Line Road Widening and Reconstruction (University to Boulevard) project. It will include 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.
Project Description: This project will construct a new traffic signal at this intersection of Easter Ave. and Joliet St./Kenton St. Design started in March of 2022 and has been completed. Construction began in 2024. Estimated completion is Summer 2025.
Project Description: The City plans to make operational improvements at the intersection of Havana St. and Easter Ave. Updates include traffic flow enhancements, along with pedestrian and bicycle improvements. Overall, it will strengthen Easter Ave. (and Broncos Pkwy.) as an alternative to Arapahoe Rd. for east-west traffic. Planning is currently underway, and construction is anticipated to begin in early 2026.
Timeline: Completed November 2024
Project Description: As part of CDOT’s Safer Main Streets Initiative, the City installed a Pedestrian Hybrid Beacon System (PHB) to make it easier and safer for pedestrians to cross Holly St. (between Arapahoe and Dry Creek Rd) to access the Willow Spring Open Space. The project also included Americans with Disabilities Act (ADA) enhancements, sidewalk improvements and trail connections on Holly St. just south of Easter Ave., along with a raised median and curb ramps to increase pedestrian safety and visibility to motorists traveling on Holly St.
Estimated Completion: Summer 2025
Project Description: This project, led by Arapahoe County will extend the eastbound Dry Creek Road right lanes, creating a through lane from the northbound I-25 off-ramp at Inverness Drive East. Other improvements to make travel through the area safer and help traffic flow are also planned. Intermittent lane closures should be expected during construction.
Additional information is available at www.arapahoeco.gov/drycreek.
Estimated Completion: Summer 2025
Project Description: The City is working alongside the Southgate at Centennial Metropolitan District and Southeast Public Improvement Metro District (SPIMD) to construct a new attached sidewalk to complete a pedestrian connection through S. Alton Way. This project will install new street lighting on S. Alton Way and S. Alton Ct. with options of innovative smart lighting systems.
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