What is the purpose of the Twin Tunnels project?
The purpose of the Twin Tunnels project is to immediately improve highway safety, mobility, and operational capacity in the eastbound direction of the I-70 Mountain Corridor in the Twin Tunnels area. This project represents the first phase of roadway improvements approved by the I-70 Mountain Corridor Programmatic Environmental Impact Statement (PEIS) Record of Decision and will be implemented in a manner consistent with the I-70 Mountain Corridor Context Sensitive Solutions process and other commitments of the PEIS.
What is CDOT proposing?
The Twin Tunnels project proposes to add a third eastbound travel lane between the Idaho Springs East Interchange (milepost 241) to the base of Floyd Hill (milepost 244) where a three-lane highway section currently exists. The project is approximately two and a half miles long and includes widening the eastbound bore of the Twin Tunnels.
Click here for an Adobe PDF file of the proposed photo.
Projects
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