C-470 Express Lanes

roject Facts

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

Current and Upcoming Activities

Wadsworth to Santa Fe:
Concrete paving eastbound between Wadsworth and Platte River; installation of walls, drainage, overhead signs, and ITS fiber; traffic switch onto new Platte River Bridge coming in the near future; demolition of the old eastbound Platte River Bridge with closures on the Mary Carter Greenway Trail.

Santa Fe to Lucent:
Earthwork; asphalt paving in median; Erickson bridge approach slab work and bridge rail; wall construction; drainage; traffic shift to median coming soon as well as noise wall construction to start near Erickson.

Lucent to Quebec:
Concrete paving including tie-ins at University and Broadway bridges and ramps; wall construction; subgrade treatment; drainage pond construction and drainage installation; overhead signs; ITS; barrier construction; pipe bore; permanent seeding;painting noise walls. Preparing for traffic switch onto new concrete pavement westbound between University and Quebec.

Quebec to I-25:
Earthwork; drainage; wall construction; ITS; Acres Green and Yosemite bridge approach slab work; Willow Creek box culvert construction; permanent barrier; temporary asphalt paving in median; installation of overhead signs; trail paving; caissons and girders coming soon for the new westbound to westbound flyover bridge.

Lane Closures

8 p.m. -5:30 a.m. Tuesday-Thursday
Alternating right and left lane closures on east and westbound C-470; traffic pace between I-25 and Wadsworth; eastbound University off-ramp full closures for ramp construction;

8:30 a.m.-3:30 p.m. Monday-Friday:
Right- and left-lane closures on Erickson, Acres Green, University and Yosemite; partial ramp closures on Broadway, Lucent and University; traffic pace on east and westbound C-470; northbound I-25 to County Line off-ramp closures.

7 p.m. - 5:30 a.m. Monday-Friday:
Alternating right- and left-lane closures on eastbound and westbound C-470; single-lane closures on Yosemite, Acres Green, Broadway, University and Erickson; full ramp closures possible at Santa Fe, Broadway, County Line and University.

8 p.m. - 8 a.m. Saturday and Sunday:
Alternating right- and left-lane closures on eastbound and westbound C-470; full ramp closures possible at Santa Fe, Quebec and University.

Full Closure of Westbound C-470, Rescheduled

What: As part of the C-470 Express Lanes Project, crews will conduct full closures of westbound C-470 from I-25/E-470 to Quebec St. These closures are necessary to erect the pier columns for the new E-470 to westbound C-470 express lane bridge.

When: Monday, June 18 through Thursday, June 21 Sunday, June 24 through Thursday, June 28 and Sunday, July 1 through Monday, July 2 from 10 p.m. to 5:30 a.m.

Detour: Westbound detours are approximately 2.8 and 4.4 miles long. See map below.

Northbound I-25 to westbound C-470 detour: Take northbound I-25 and exit onto County Line Rd. west. Continue on County Line Rd. to Yosemite St. and turn left. Take Yosemite St. to the C-470 westbound on-ramp.
Southbound I-25 to westbound C-470 detour: Take southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. to Yosemite St. and turn right. Take Yosemite St. to the westbound C-470 on-ramp.
Southbound E-470 to westbound C-470: Take southbound E-470 to southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. to Yosemite St. and turn right. Take Yosemite St. to the westbound C-470 on-ramp.

Mary Carter Greenway Trail Full Closure

What: Northbound and southbound Mary Carter Trail will be closed to demo the old eastbound South Platte River Bridge.

When: Beginning June 18 for approximately 2 weeks. Trail will be closed 24/7.

Detour:

Western Detour: Take the C-470 Bikeway trail west on the south side of C-470 along Chatfield Lake. Continue right to pass underneath C-470 and turn east to stay on the C-470 Bikeway trail. Join the Columbine Trail after crossing Chatfield Ave. Take the trail north along Chatfield Ave. as it turns into S Platte Canyon Rd. After crossing Mineral Ave. take a right and join the Mineral Ave Trail, continue on and then connect back onto Mary Carter Greenway Trail. (Approx. 3.2 miles)
Eastern Detour: Follow the Highline Canal Trail east, then turn left on the trail before the Centennial trail begins and continue as it goes under County Line Rd. Then continue north on the Highline Canal Trail to the bike lane on Mineral Avenue. Take Mineral Ave. across Santa Fe Drive, then get on the Railroad Spur Trail back onto Mary Carter Greenway Trail. (Approx. 3 miles)

Lane Closure on Eastbound C-470

What: The right lane on eastbound C-470 will be closed from Yosemite off-ramp to I-25/E-470 ramps to perform wall construction, roadway widening, barrier setting and lane striping.

When: Beginning in late June for approximately ten weeks. Closure is 24/7.

Two lanes of C-470 will remain open between Yosemite and I-25/E-470. Motorists should be prepared for delays in this area.

24/7 Closures: Northbound Broadway Dedicated Right Turn Lane

What:
Closure of northbound Broadway dedicated right turn onto eastbound C-470 on-ramp to perform ramp construction and concrete paving as part of the C-470 Express Lanes Project

When:
24/7 for approximately three weeks starting April 30

Non-commercial vehicles will still be able to utilize the on-ramp and will turn right at the traffic light.

Commercial vehicle detour is approximately 2.23 miles long. Take northbound Broadway to County Line Road and turn right. Take County Line Road to University and turn right, then continue onto eastbound C-470 on-ramp. (See map.)

Full Closure: I-25 Ramps to C-470 for Paving

What: Closure of the I-25 ramps to C-470 and C-470 ramps to I-25. Work includes temporary paving, barrier placement and completing the traffic switches onto new ramp pavement.

When:

Northbound I-25 to westbound C-470: Tuesday, June 5 through Thursday, June 7 from 10 p.m. to 5:30 a.m. and Saturday, June 9 from 12 a.m. until 8 a.m.
Eastbound C-470 ramp to northbound I-25: Saturday, June 16 from 12 a.m. to 8 a.m.
Eastbound C-470 ramp to southbound I-25: Thursday, June 7 from 10 p.m. to 5:30 a.m. and Saturday, June 9 from 12 a.m. to 8 a.m. as well as Monday, June 11 through Thursday, June 14 from 10 p.m. to 5:30 a.m.

Detours:

Northbound and southbound I-25 ramps to westbound C-470 Detour:
Take northbound and southbound I-25 to northbound E-470 to Peoria Street exit. Take Peoria Street to southbound E-470 and continue onto westbound C-470. No tolls will be charged during closure.
Eastbound C-470 ramp to southbound I-25 detour:
Take eastbound C-470 ramp to northbound I-25. Exit on Dry Creek Road, turn left and continue back onto southbound I-25.
Eastbound C-470 ramp to northbound I-25 detour:
Take eastbound C-470 ramp to southbound I-25. Exit on Lincoln Avenue, turn left and continue back onto northbound I-25.

C-470 Nighttime Ramp Closures

Due to the nature of the construction work on the C-470 Express Lanes Project, nighttime ramp closures are required intermittently through the next few weeks.

Ramps Affected:
Quebec, University, Broadway, Lucent, Santa Fe and Wadsworth both westbound and eastbound

Details:
These closures are required for crews to stripe, place barrier, move equipment and other activities. Watch for detour signs and use caution. Detours will lead motorists to the next exit, where they can return to C-470 and to their destination. Detours are typically 2.5-3 miles long.

Willow Creek Trail at C-470 Full Closure

What:
Full closure of north and southbound Willow Creek Trail. The closure will occur twenty-four hours a day and is necessary to begin drainage work and trail widening construction.

When:
24/7 through Friday, June 15

Detour:
Detours are approximately one mile long.
See map below.

Southbound Willow Creek Trail Detour:
Take C-470 Trail west to Acres Green Drive, turn left. Take Acres Green Drive to Park Meadows Dr. and turn left, continue to Willow Creek Trail south.
Northbound Yosemite Detour:
Take Park Meadows Dr. west to Acres Green Dr., turn right. Take Acres Green Drive to C-470 Trail and take the trail east, then merge onto Willow Creek Trail north.