Projects

C-470 Express Lanes

Project Facts

  • Location: 12.5 miles of C-470, from I-25 to Wadsworth Boulevard
  • Cost: $276 million
  • adding two westbound Express Lanes from I-25 to Colorado Boulevard, and adding one westbound Express Lane from Colorado Boulevard to Wadsworth Boulevard
  • adding one eastbound Express Lane from just west of the South Platte River to I-25;
  • fully reconstructing a portion of the existing pavement;
  • adding auxiliary lanes;
  • improving portions of on- and off-ramps to current standards (including ramp metering where appropriate);
  • realigning substandard curves;
  • making safety and operational improvements between I-25 and Quebec via direct-connect ramps from I-25 to the westbound C-470 Express Lanes;
  • widening existing bridges throughout the project area;
  • replacing the bridges over the South Platte River;
  • installing water-quality features where required;
  • installing noise barriers where required;
  • installing Intelligent Transportation Systems elements and tolling equipment; and
  • adding grade separations for the multi-use trail at Quebec and Colorado.

Current and Upcoming Work

Wadsworth to Santa Fe:

Work includes:

  • Concrete and cable barrier installation;
  • Noise Wall construction;
  • Drainage pond work;
  • Deer fence assembly.
  • Traffic has been shifted onto new permanent concrete pavement and the newly constructed South Platte River Bridges eastbound and westbound between Wadsworth and Santa Fe. The westbound Platte Canyon exit/entrance is complete. The eastbound Wadsworth on-ramp is in final alignment.

Santa Fe to Lucent:

  • Continued work on the Erickson bridges.
  • Traffic switch to put eastbound lanes into final alignment including the auxiliary lane between Santa Fe and Lucent will be completed in the near future.

Lucent to Quebec:

  • Permanent concrete barrier and guardrail installation;
  • Concrete work to complete the University eastbound and westbound off-ramps. These ramps will be open to their final alignment soon.
  • Trail work is on-going;
  • Riprap installation and permanent ditch construction;
  • Work on drainage ponds including outlet structures and final grading taking place;
  • The trail underpass at Colorado Blvd. is open.

Quebec to I-25:

  • Permanent concrete barrier installation;
  • Concrete paving;
  • Slope paving;
  • Bridge work;
  • Trail construction;
  • Sign structure installation;
  • Work on drainage ponds including outfalls and final grading;
  • Westbound traffic will be shifted into final alignment in the near future.

Lane Closures

Notice of Extended Closure:

To eliminate the need for more than 20 nights of full closures, CDOT will conduct an extended right lane closure on the Quebec St. on-ramp to westbound C-470. The left lane of the on-ramp will remain open.

This closure will begin on Friday, December 13 at 8am and will continue through Wednesday, December 18 at 5:30am.

The closure is necessary to tie in the new permanent concrete pavement on the ramp to the existing concrete on Quebec St. It will allow crews to safely complete paving operations while allowing the traveling public to maintain usage of the ramp.

For your own safety and for the safety of our crews, watch for construction vehicles entering and exiting mainline C-470, obey all posted signage in construction zones and avoid distracted driving, especially in the work zone. Your safety and the safety of our crews is our highest priority.

Upcoming Lane Closures:

  • Sunday, December 8 and Tuesday, December 10 through Thursday, December 12 from 9:30pm to 5:30am eastbound C-470 will be closed from Wadsworth to Santa Fe to install a permanent overhead variable message board. Detour: Exit Wadsworth Blvd eastbound off-ramp. Turn left onto northbound Wadsworth Blvd., proceed north to Ken Caryl Ave. and turn right. Continue on Ken Caryl until the road becomes Mineral Ave. Take Mineral Ave. east to Santa Fe Dr. Turn right onto southbound Santa Fe, then continue south to the eastbound C-470 on-ramp flyover.
  • Tuesday, December 10 from 10pm to 5:30am eastbound C-470 will be closed from Quebec St. to I-25/E-470 for permanent striping operations in support of project completion. Detour: EB C-470 to SB and NB I-25: Take eastbound C-470 to the Quebec St. off-ramp. Turn left onto Quebec St., to County Line Rd., and turn right onto County Line Rd. to the northbound/southbound I-25 on-ramps. EB C-470 to NB E-470: Take eastbound C-470 to the Quebec St. off-ramp. Turn left onto Quebec St. to County Line Rd., and turn right. Take County Line to Inverness Pkwy. Take Inverness Pkwy, to Jamaica St., and turn left onto Jamaica St. to the northbound E-470 on-ramp.
  • Sunday, December 8 through Tuesday, December 10 from 10pm to 5:30am southbound/northbound I-25 and southbound E-470 ramps to westbound C-470 closed for wall construction, paving operations and barrier installation. Detour: SB E-470 to WB C-470: Take southbound E-470 to southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. west to Yosemite St. and turn right. Take Yosemite St. north to the westbound C-470 on-ramp. SB I-25 to WB C-470: Take southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. west to Yosemite St. and turn right. Take Yosemite St. north to the westbound C-470 on-ramp. NB I-25 to WB C-470: Take northbound I-25 and exit onto County Line Rd. west. Continue on County Line Rd. west to Yosemite St. and turn left. Take Yosemite St. south to the westbound C-470 on-ramp.
  • Wednesday December 11 and Thursday, December 12 from 10pm to 5:30am and Saturday, December 14 from 12am to 8am eastbound C-470 ramps to northbound E-470 and northbound I-25 will be closed to install drainage pipe, perform grading and paving activities. Detour: Take the eastbound C-470 ramp to southbound I-25. Exit onto Lincoln Ave., turn left and continue back onto northbound I-25. Take northbound I-25 to northbound E-470.
  • Wednesday, December 11, Thursday, December 12 and Sunday, December 15 from 10pm to 5am and Friday, December 13 and Saturday, December 14 from 11pm to 7am southbound I-25 closed at County Line Rd. Detour: Southbound I-25 traffic will exit at County Line Rd. and continue through the signal to the southbound I-25 on-ramp. E-470 and C-470 traffic will continue on southbound I-25 to Lincoln Ave. Take Lincoln Ave. eastbound and continue back onto northbound I-25 to westbound C-470 and northbound E-470.
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