Arapahoe and I-25 Interchange

Project Description


Arapahoe County has partnered with CDOT, the cities of Centennial and Greenwood Village and the Southeast Public Improvement Metropolitan District to improve the I-25 and Arapahoe Road interchange. Prior to construction, multiple studies were completed to determine the best solution to traffic and safety issues at this interchange. Construction will benefit through traffic, ramp traffic, interchange operations, neighbors and businesses.

This project will
  • design and replace the existing I-25 bridge over Arapahoe Road
  • improve the interchange complex to reduce congestion; and
  • improve traffic operations and safety
Construction began in May 2016 and is expected to be substantially completed by summer 2018.
Phasing Schedule

Additional Resources


Sign up for project updates and notices from CDOT.
Traffic Signal Fact Sheet
September 30 - October 1 Closure Fact Sheet