Highline Canal Trail Underpass at C-470 Closes for Three Months Starting Aug. 8

Aug. 6, 2018 -

DOUGLAS COUNTY—Starting Wednesday, Aug. 8, and continuing for three months, CDOT will close the northbound and southbound Highline Canal Trail underpass at C-470. This closure is necessary to ercet a wall as a part of the C-470 Express Lanes project.

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  • Northbound Highline Canal Trail underpass detour (approximately 0.8 miles):
    1. Take Plaza Drive west toward Erickson Boulevard.
    2. At Erickson Boulevard turn right, continue north to County Line Road, and turn right.
    3. Proceed west on County Line Road to Primo Road and turn right.
    4. Take Primo Road to Highline Canal Trail and proceed north.
  • Southbound Highline Canal Trail underpass detour (approximately 0.8 miles):
    1. Take Primo Road north to County Line Road and turn left.
    2. Proceed on County Line Road west to Erickson Boulevard and turn left.
    3. Proceed south on Erickson Boulevard to Plaza Drive, turn left onto Plaza Drive, and continue to Highline Canal Trail south.

  • Follow detour signs accordingly and go slow for the cone zone.
  • Construction is weather dependent and the schedule is subject to change.
  • For motorists on C-470, courtesy patrol is provided from 6 to 9 a.m. and from 3:30 to 6:30 p.m., Monday through Friday, to assist disabled vehicles at no cost to drivers.

More than 100,000 motorists currently use this segment of C-470 each day, with volumes projected to increase 40 percent by 2035. Construction is scheduled for completion in spring 2019.

Project Info

The $276 million C-470 Express Lanes project will increase mobility and user choice along 12.5 miles of the highway, between I-25 and Wadsworth Boulevard. On westbound C-470, crews will build two additional Express Lanes from I-25 to Colorado Boulevard, and one additional Express Lane from Colorado Boulevard to Wadsworth. On eastbound C-470, they will build one additional Express Lane between I-25 and Wadsworth Boulevard.

The project also includes full reconstruction of existing pavement, the addition of 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, the installation of tolling equipment, and new C-470 trail underpasses at Colorado and Quebec.

When complete, motorists may use the Express Lanes on C-470 for a faster, more reliable commute in exchange for paying a toll, or drive the general-purpose lanes for free.

About Express Lanes

Express Lanes increase roadway capacity and help to manage congestion on the highways. The use of toll pricing during peak travel times provides an option for travelers, reduces delays, manages congestion and maintains reliable travel times.

HOV3/Express Lanes currently are open on I-25 from downtown Denver to 120th Avenue, on US 36 from Denver to Boulder and on the I-70 Mountain Express Lane. For more information, visit the Express Lanes website. To get an ExpressToll account and pass, visit expresstoll.com.