The spring and summer months are the busiest time for construction.

Be sure to keep an eye out for major construction projects that may affect your travel routes. Below is an overview of current major construction projects in the City of Centennial. Select headers below to expand details.

I-25/Arapahoe Road Interchange Reconstruction Project (CDOT)

Contact: Project Website |​ Email |​ Project Hotline: (720) 580-2525 
Start Date: May 9, 2016
Estimated End Date: Summer 2018

Project Background:

This project consists of replacing the I-25 bridge over Arapahoe Road and other interchange improvements designed to reduce congestion and improve traffic operations and safety. This is a CDOT project, in partnership with Arapahoe County, the Cities of Centennial and Greenwood Village, and the Southeast Public Improvement Metropolitan District. Visit CDOT's project website for updates and closure information. 

2017 Street Rehabilitation Program

Contact: Michael Terry, CIP Street Rehabilitation Manager
Tentative Start Date :  March 6, 2017
Estimated End Date: October 31, 2017
Estimated Cost: $10.2M

Street Rehabilitation Map

Mill and Overlay - Streets receiving a mill and overlay treatment will have the surface of the road milled for a portion or the entire width of the street and a new asphalt surface constructed.

Concrete Replacement - Streets receiving mill and overlay will also receive concrete rehabilitation before the pavement treatment. This effort repairs broken curbs, gutters, sidewalks and other concrete structures that if left unrepaired will shorten life of the major rehabilitation investment. As part of this work, curb ramps will be repaired and brought to current Americans with Disabilities Act (ADA) standards and the removal of concrete bus pads on E. Dry Creek Road.

List of streets scheduled for Mill and Overlay 

Hot In-Place Recycling (Heater/Repave) - Street segments receiving this treatment will have the existing pavement heated, re-mixed and placed, and finally topped with new asphalt in one continuous process. This treatment is environmentally friendly because it reused existing materials and significantly less natural resources. S. Buckley Rd from Smoky Hill Rd. to E. Orchard Rd.​ 

Surface Treatment (Slurry Seal) - Streets that have less severe cracking and display less distress can be preserved with a slurry seal. When used properly, this treatment will extend a street's pavement life five to seven years. 

List of streets scheduled for Surface Treatment

Smoky Hill and Himalaya Intersection Improvement Project

Contact:  Kelsey Deckert, Project Manager
Start Date: October 9, 2017
Estimated End Date: January 2018

The project will include new left-turn lanes in the westbound and northbound directions, widening sidewalks, and adding a raised median, bike racks, intersection lighting, and multi-modal informational kiosks.  Lane closures will be required, but one lane in each direction of travel will remain open at all times. Lane closures will be limited to the hours of 8:30 a.m.-3:30 p.m. unless otherwise permitted for special circumstances. This project is intended to reduce congestion and increase safety and usability for vehicular and pedestrian traffic. Eighty percent of the construction funding for this project is through the DRCOG TIP (Transportation Improvement Program).

Surrounding Area Projects

Long Road Reconstruction | The City of Greenwood Village 

The City of Greenwood Village Public Works Department is reconstructing the pavement on East Long Road, East Long Lane, and Jackson Street. The project will consist of pavement reconstruction, upgrading of the drainage system and enhancement of the streetscape section. Identified goals include: the mitigation of winter icing conditions, traffic calming and improved pedestrian safety. 

Long Road will open to through traffic on Monday, December 11, 2017. However, work will continue as weather permits through the winter with utility and grading activities during non-rush hour periods with one way flagging operations. Hours of one way flagging will occur between the hours of 8:30 a.m. and 3:30 p.m. Monday through Friday and 7 a.m. to 7 p.m on weekends. The remaining pavement reconstruction work on Long Lane and Jackson Street will commence in late Spring with only short term weekend closures expected.

For more information, please visit the project website at or call John Wannigman, Project Manager, at 303-708-6139 or email

Quick Contact Info:

City of Centennial
13133 East Arapahoe Road
Centennial, CO  80112

(303) 325-8000 - 24 Hour Citizen Response Center
(720) 488-0933 - Fax Number



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