Photos: Construction alerts on Colorado highways this summer and beyond

Categories: News

Big photos and more below.
We've all experienced the excitement of hitting the road for a much-deserved trip into the high country, followed swiftly by the disappointment of getting stuck in a traffic jam as a result of endless construction delays. To help drivers avoid such nightmares, the Colorado Department of Transportation has released details about forthcoming and ongoing projects. Check out the summer 2013 update, complete with CDOT-supplied photos, captions and text. With luck, the info should help you spend more time out of your car during your next getaway than stuck inside it.


"The interior of the eastbound I-70 tunnel bore after a recent blast that advanced excavation 13 feet from the east portal. Crews are 35 percent complete with the tunnel excavation."
The widening of eastbound I-70 from east Idaho Springs, through the Twin Tunnels, to the bottom of Floyd Hill is continuing around the clock. Widening is underway east of Hidden Valley with paving and median guardrail work through the end of July. Paving is scheduled for mid-July at the chain station on the west side of the tunnel. When paved, eastbound traffic will shift to the outside, allowing crews to begin work on the center median barrier. Also in July, new bridge girders are scheduled to be placed over Clear Creek, requiring left lane closures in both directions. Other progress:

•An average of six blasts and excavation of 50-60 feet from the east and 30-40 feet from the west each week.

• Construction of about 300 feet of retaining wall each week.

•About 460 feet of material excavated so far, roughly 72 percent of the total required.

Blasting/rock scaling are requiring 20-30 minute traffic stops and single lane closures most days for work east and west of the tunnel, including removal/setting of concrete barriers, construction of retaining walls, grading to widen the highway and staging equipment. Every effort is being made to maintain both lanes of the detour around the tunnel, but for the safety of the traveling public, it is sometimes necessary to close a lane so trucks can access the portal area to remove rocks and debris after blasting.

Another aspect of the Twin Tunnels project is the Design/CSS Process. Recent activities include:

• In May, project representatives including Colorado Parks and Wildlife and the Army Corps of Engineers, conducted a field inspection review of the Construction Package 3 elements, signifying 30 percent completion of this design package. This is the final construction package and consists mainly of restoring CR 314 back to the frontage road conditions that existed before the project began, doing the final grading at the portals and trailhead, and enhancing Clear Creek.

• Grading details at the tunnel portals are nearing completion and the focus is turning to landscaping.

• Project representatives continue working closely with Colorado Parks and Wildlife to conduct hydraulic modeling and develop details for the stream enhancement.

• Construction details of the stone veneer for the CR 314 retaining wall fascia are nearing completion.

Continue for additional construction alerts and more for Colorado highways this summer and beyond.

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