Projects

C-470 Express Lanes

High Line Canal Trail Full Closure

As of Monday, Oct. 30, the High Line Canal Trail is closed for approximately two months for drainage work

  • The trail detour route will use the C-470 Trail to Erickson Boulevard, then  County Line Road to Primo Road, and back to the High Line Canal Trial. (See map below.)
  • Follow posted detour signs.
  • Construction activities are weather dependent and the schedule is subject to change.

 

Updates

Concrete Paving
Castle Rock Construction began paving concrete on eastbound C-470 between Quebec and University for the new widened highway.

Frequent Nighttime Ramp Closures and Traffic Shifts
Travelers can expect frequent nighttime ramp closures from 8 p.m. to 5:30 a.m. These closures are necessary for striping operations, maintenance, and setting of temporary barrier. The detours are usually approximately 3 miles round trip to the next exit and back. 

Areas between Quebec and Wadsworth have been restriped to shift the traffic alignment. Be sure to drive carefully through the construction zone and obey posted speed limit signs.

Reconstruction of the South Platte River Bridges and Widening of the Erickson Bridges
Work on the new eastbound South Platte River Bridge is well underway. Bridge foundations have been constructed, concrete girders have been set, and the bridge deck pour will occur in the soon. Because of the proximity to the Mary Carter Greenway Trail, flaggers have been placed to guide trail users through the construction zone when needed. The South Platte River bridges are the only bridges being fully reconstructed with the C-470 project. They are being brought to current design standards and when complete will also accommodate increased vertical clearance for equestrian use on the Mary Carter Greenway Trail.

Work on the Erickson Bridge widening has begun. Lane closures on Erickson can be expected.

University, Broadway and Big Dry Creek Bridges
Bridge widening work at University, Broadway, and Big Dry Creek have significantly progressed. Concrete has been poured on these bridge decks.

Wadsworth to Santa Fe
Activity between Wadsworth and Santa Fe continues to increase with the extension of the construction zone advanced warning signage, grading operations, replacement of the South Platte River Bridges, and installation of equipment and devices (i.e. ramp meters, cameras, Variable Message Signs, etc.) for the corridor.

Lucent to Quebec
Construction continues between Lucent and Quebec including trail reconstruction, temporary barrier and restriping, earthwork and drainage operations, asphalt paving, retaining and noise wall construction, and ITS work along the outside shoulders of east and westbound C-470. 

Project Facts

  • Location: 12.5 miles of C-470, from I-25 to Wadsworth Boulevard
  • Cost: $276 million

Mary Carter Greenway Trail Closures

The Mary Carter Greenway Trail will be closed intermittently under the South Platte River Bridge as crews replace the existing eastbound and westbound bridges.

  • Check this site for notification of closures.
  • Follow the posted detour signs.
  • The western detour is approximately 3.2 miles, which is 0.3 miles longer than original route.
    • Follow the Columbine Trail along Chatfield Avenue and Platte Canyon Road. Take the Mineral Trail along Mineral Avenue to connect back onto the Mary Carter Greenway Trail.
  • The eastern detour is approximately three miles, which is one mile shorter than original route.
    • Follow the Highline Canal Trail to Southpark Lane. Take the Mineral Avenue Trail. After crossing Santa Fe Drive, continue on the Railroad Spur Trail onto Mary Carter Greenway Trail.

Unless noted above, the trail will be open and available to use. While work is being performed under the South Platte River Bridges and when a full closure is not required, flaggers may be present to guide trail users safely through the work zone. Please be cautious and obey flagger instructions.


Photo of the Week

On Saturday, Nov. 11, crews poured concrete on the new eastbound bridge over the Platte River.


Expected Lane Closures Through Saturday, November 25th

Friday (11/17) 8:30 a.m. - 3:30 p.m.: Alternating right and left single lane closures on Lucent, Erickson, and Acres Green for ITS and bridge work.
Friday (11/17) 9 a.m. - 3:30 p.m.: Alternating right and left lane closures on University and Broadway for bridge construction. Partial ramp closures at Lucent, Broadway, and University as well.

Saturday (11/16) 8 p.m.- 5 a.m.: Westbound Quebec on-ramp full closure; eastbound Broadway and Quebec off-ramp full closures; eastbound Broadway on-ramp full closure.

Friday (11/17) 7 p.m.-5 a.m.: North and southbound Erickson right and left lane closures for bridge construction; north and southbound University and Broadway alternating right and left lane with sidewalk closures; north and southbound right and left lane closures on Yosemite and Acres Green for bridge construction.

 Friday (11/17) 8 p.m.-5 a.m.: Eastbound Lucent on-ramp full closure; Eastbound University on-ramp full closure; east and westbound University off-ramp full closures; westbound Lucent off-ramp full closure.

 Thursday (11/16) 8 p.m.-5:30 a.m.: Westbound Broadway off-ramp full closure for temporary ramp widening work; east and westbound Santa Fe off-ramp full closures.

Friday (11/17) and Saturday (11/18) 8 p.m.-5:30 a.m.: Alternating right and left single lane closures on east and westbound C-470 for median widening earthwork, setting of temporary barrier, and equipment mobilization.

Sunday (11/19) 12 a.m. - 5:30 a.m.: Eastbound and westbound Santa Fe off-ramp full closure for temporary ramp widening.

Monday (11/20)-Wednesday (11/22) 8:30 a.m.-3:30 p.m.: North and southbound Erickson right and left single lane closures; north and southbound Lucent alternating single right and left lane closures; Southbound University left and right lane closures; Lucent, Broadway, and University partial off-ramp closures; westbound Broadway partial on-ramp closure and north and southbound right and left lane closures on Broadway.

Sunday (11/19) 7 p.m.-5:30 a.m.: Right and left lane closures for bridge construction on Broadway and University; eastbound C-470 alternating right and left lane closures for setting of temporary barrier, median earthwork prep, and equipment mobilization; westbound Broadway off-ramp full closure and eastbound Quebec on-ramp full closure possible. Follow posted detour signs.

Sunday (11/19)-Tuesday (11/21) 8 p.m.-5:30 a.m.: Alternating right and left lane closure on C-470; eastbound Broadway and Quebec off-ramp full closure for temporary ramp widening work; westbound Quebec off-ramp full closure possible.

Monday (11/20) 7 p.m.-5:30 a.m.: Full closures of eastbound University off-ramp, eastbound Lucent on-ramp, and westbound Lucent on-ramp.

Monday (11/20)-Tuesday (11/21) 7 p.m.-5:30 a.m.: Eastbound Broadway partial on-ramp closure; north and southbound Erickson right and left lane closures; north and southbound University and Broadway lane closures; north and southbound Yosemite and Acres Green right and left lane closures.

Tuesday (11/21) 7 p.m.-5:30 a.m.: Full closures at westbound Broadway off-ramp, eastbound Broadway on-ramp, eastbound Santa Fe on-ramp and east and westbound Santa Fe off-ramp for temporary ramp widening work.

NO LANE CLOSURES WEDNESDAY (11/22) - SATURDAY (11/25). Enjoy the holiday weekend and be safe!

Note: The traffic control supervisor determines if closures need to be adjusted to provide a safe method of handling traffic conditions if curves, hills, etc., are present. All lane closures are weather dependent. Be sure to follow posted detour signs during ramp full closures.



Project Overview

The C-470 Express Lanes project will increase mobility and user choice along 12.5 miles of C-470 between I-25 and Wadsworth Boulevard. The $276 million project includes the following improvements:

  • Mobility Improvements:
    • Two additional westbound Express Lanes constructed from I-25 to Colorado Boulevard, and one additional Express Lane from Colorado Boulevard to Wadsworth.
    • One additional eastbound Express Lane constructed along the length of the project, between I-25 and Wadsworth Boulevard.
  • Additional safety and infrastructure improvements:
    • full reconstruction of existing pavement
    • new auxiliary lanes at selected locations
    • on- and off-ramp improvements
    • realignment of substandard curves
    • widening of existing bridges
    • replacing the bridges over the South Platte River

Funding

The project is funded by $110.6 million in combined state and federal funding, and $10 million from Douglas County. The remainder will be funded via a loan repaid by toll revenues from the Express Lanes.


About Express Lanes

The C-470 Express Lanes project will add Express Lanes in addition to the existing, free general-purpose lanes. Drivers will always have a choice of using the free existing lanes or paying a toll to use the Express Lane.

There will be no HOV/carpool lanes within the C-470 corridor.

Express Lanes increase roadway capacity and help to manage congestion on highways. The use of toll pricing during peak travel times reduces delays, manages congestion and maintains reliable travel times. Express Lanes are currently open on:

For more information, visit CDOT's Express Lanes website

You can also find lane closure information any time.

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