Frontage Roads

East and West Frontage Road Drainage Block Closures Complete

Block 8 on the East Frontage Road between Sky View Lane and Columbine Open Space is OPEN! This concludes the series of 10 frontage road closures crews needed for major drainage work. We appreciate your patience!

During these closures, crews:

  • Replaced 11 total drainage crossings on the West Frontage Road
  • Replaced 23 total drainage crossings on the East Frontage Road
  • Replaced 20,450 linear feet of drainage – that would be like stacking the Empire State Building on top of itself 16 times!
  • Maintained access through the closures to emergency services
  • Successfully used a temporary flagging signal to reduce 24-hour flagging operations on the West Frontage Road
  • Installed guardrail along the frontage roads in safety-critical areas
  • Replaced three retaining walls to allow water from I-25 to flow to designated areas along the frontage roads

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Additional Frontage Road Work

Additional closures, lasting up to four days each, on the frontage roads will be scheduled this summer for guardrail installation. Flagging operations on both the East and West Frontage Roads will continue, Monday through Friday, from 8:30 a.m. to 4 p.m. Please continue to give yourself extra time if you plan to travel on the frontage roads.

Safety First

  • The speed limit along frontage roads has been reduced to 45 mph. During flagging operations, it will be 40 mph.
  • Please pay attention.
  • If you are not local traffic, please stay the course on I-25 Remember: both frontage roads are striped with double-yellow lines, so passing is legally prohibited.

About the Work

While crews will complete as much of the work as possible behind construction barrier, some closures of the frontage roads will be necessary to safely install these large pipes.

There are 11 total drainage crossings on the west side, and 23 on the east side – some pipes are as large as 48 inches and buried as deep as 16 feet. Safely installing these drainage crossings will require one-way flagging and a series of 10 closures throughout early 2020.

About the Closures

  • 10 closures are expected intermittently through summer 2020
  • Each could last up to eight days
  • Closures will happen one at a time
  • Detours will take drivers around the closures via the opposite frontage road or I-25
  • Crews have coordinated the closure blocks so driveways are not impacted and access for schools and businesses is maintained
  • Partial closures are expected to continue throughout early 2020

This web page will be updated prior to planned closures, or sign up for email updates by emailing [email protected]

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