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. The City has been working with designers to have the overhead distribution lines raised in order to accommodate the signal. Construction to raise the lines has been completed. Installation of the transformer to power the signal is the next phase. Advertisement of construction is anticipated for Summer 2024.
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: Multimodal improvements are planned along Colorado Blvd., from Arapahoe Rd. to Dry Creek Rd., to enhance safety, create more direct routes for pedestrians and cyclists, and improve connectivity to the neighborhoods and schools in the area. Planning is underway, and construction is estimated to begin in 2026.
Learn more about the study phase of this project on the Colorado Boulevard Multimodal Study page.
Estimated Start Date: Construction estimated to begin end of 2024
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 is estimated to begin in 2024.
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: Winter 2024
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 as well with options of innovative smart lighting systems.
Below is a conceptual design map. Please note that the blue line is the proposed sidewalk and yellow is the extent of the new lighting installation. There is also a proposed crosswalk where S. Alton Ct. connects with S. Alton Way.
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