Work on Twin Tunnels entering home stretch; on target for December finish

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IDAHO SPRINGS, Colo. -- For nearly 16 months CDOT and contractor crews have been blasting, digging and reshaping the Twin Tunnels near Idaho Springs, in hopes of making trips to and from the high country much easier for travelers on I-70 west of Denver.

“We began the eastbound tunnel work in April of last year and completed the work last December. The westbound work is on the same schedule, we have finished blasting work inside the tunnel and are now working on putting concrete inside the west portal, work which we hope to have done by mid-December,” said Mike Keleman, project engineer. “We may have some blasting to finish up on the side of the mountain, but for the most part we are in the final stages of getting this side ready for a December opening.”

The project will see three lanes east/west through the tunnels, which have been a bottle-neck for years both in summer and winter.

With the new lanes and LED lighting inside the twin tunnels the ride to Idaho Springs and beyond will be much better for motorists.

The concrete work is due to begin in a week or so and once that is completed, striping will get done on the westbound side, which will be about 30 feet wider than the tunnel was before work began.