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CDOT to host open house on planned improvements for I-70 Floyd Hill to Veterans tunnels project

Commits funds for environmental assessment
Bridge over Clear Creek
Posted at 6:46 PM, Feb 26, 2020
and last updated 2020-02-26 20:46:39-05

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DENVER -- If you've ever been up to the mountains on weekends, you know that I-70 becomes a bottleneck along certain stretches.

The Colorado Department of Transportation is gearing up to fix one of those bottlenecks, the one from Floyd Hill to the east side of Idaho Springs.

The time frame depends on funding, but CDOT officials said they now have the money to fund an environmental assessment, and preliminary engineering, for the Floyd Hill to Veterans Memorial Tunnel project.

CDOT's Tamara Rollison said the westbound bridge over Clear Creek is one of the state's priorities for replacement.

"It's certainly served its purpose for a very long time," she said. "but traffic has outgrown that bridge, and it needs to be replaced."

From crumbling expansion joints to wood bracing underneath some deck repair, time has taken a toll on that bridge.

Three Alternatives

CDOT is now considering three alternatives for replacing that bridge and improving that stretch of I-70.

Two involve adding a third lane of capacity between U.S. 6 and the Hidden Valley/Central City Interchange.

  • The Tunnel Alternative would construct a tunnel that would carry three lanes in the westbound direction. Eastbound I-70 would be realigned on the existing footprint to flatten curves. (This alternative includes two options for the alignment of the new frontage road on either the north or south side of Clear Creek.)
  • The Canyon Viaduct Alternative would construct a viaduct structure and elevate both the eastbound and westbound lanes of I-70 through Clear Creek Canyon. The existing I-70 highway under the new bridges would be used for the frontage road and Greenway.

The Environmental Assessment is also evaluating the "No Action Alternative," which would replace the bridge at the bottom of Floyd Hill (near the U.S. 6 junction with I-70) but would not add any roadway capacity or other improvements.

"We don't have enough to build it, but we certainly will be pursuing those funds aggressively," Rollison said. "We need about $600 - 700 million to make these improvements."

CDOT rendering I-70 over Clear Creek

Open House

CDOT will host an open house Thursday evening to discuss the alternatives.

That meeting will take place from 5 to 7 p.m. at Clear Creek High/Middle School, 185 Beaver Brook Canyon Road.

Rollison said they want to hear from stakeholders, including truckers, commuters, tourists, skiers, business owners and the communities along that stretch of I-70.

Debra Eaker, who helps manage the Canyon Outpost, a clothing, gift and souvenir shop in Idaho Springs, told Denver7 that traffic has become a nightmare.

"I've talked to a lot of people who have given up skiing, given up going to the mountains," she said, "not only because of the price, but because of the traffic," she said.

Eaker said it wouldn't hurt to widen I-70 all the way up to the Continental Divide, but adds she'd like to see more focus on safety.

She says the brand new car she was riding in was hit last month as she and her husband were driving back to Littleton from the shop in Idaho Springs.

"We were in the left lane and a car came barreling down so fast," she said. "It hit a car in the middle lane, knocked it into us, pushed us around sideways and then pushed us into another car."

Eaker said whether the highway is widened closer to Idaho Springs, or not, she'd like to see more state troopers keeping an eye on speeders.

"It's not just a matter of inconvenience sitting in traffic," she said. "It's dangerous."

Funding Question

Rollison said if money becomes available anytime soon, CDOT could begin construction in 2022.

When asked whether CDOT has given thought to adding more than one lane, given Colorado's expected growth, Rollison said, "We may have to make that lane a 'managed lane,' similar to what we do with our other interstates, because we can't build ourselves out of congestion anymore. The idea behind that (tunnel) is that we would have a lane in which we could provide a level of travel reliability in exchange for a toll."