In a cooperative effort, the Federal Highway Administration (FHWA), the Colorado Department of Transportation (CDOT), and the City and County of Denver (CCD) have prepared this Environmental Assessment (EA) for a proposed new interchange on Interstate 70 (I-70) with Central Park Boulevard (CPB) in Denver, Colorado. The proposed project will create new access to I-70, constituting a Federal Action subject to the National Environmental Policy Act (NEPA). This EA evaluates the socioeconomic and environmental impacts of the project as well as the traffic impacts to I-70 at the proposed interchange location.
Social, economic and environmental impacts of proposed improvements to the Interstate 25 (I-25) corridor through the Colorado Springs Urbanized Area have been examined in this Environmental Assessment (EA).
The Twin Tunnels project will add an additional lane of highway capacity and improve roadway geometry for about 3 miles of eastbound I-70 from the East Idaho Springs Interchange (milepost 241) to the base of Floyd Hill (milepost 244) where the project ties into an existing three-lane section. The eastbound bore of the Twin Tunnels will be expanded to accommodate the widened roadway section.
Social, economic and environmental impacts of proposed improvements to the Interstate 25 (I-25) corridor through the Colorado Springs Urbanized Area have been examined in an Environmental Assessment (EA) that was approved in March 2004.
The Twin tunnels project proposes to add a third eastbound travel lane on I-70 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.
A detailed environmental analysis was conducted and potential impacts associated with the No Action Alternative and Preferred Alternative were documented. Mitigation measures to be implemented with the Preferred Alternative were identified in the EA. No significant impacts to the environment were identified during the course of this study.
Social, economic and environmental impacts of proposed improvements to the Interstate 25 (I-25) corridor through the Colorado Springs Urbanized Area have been examined in an Environmental Assessment (EA) that was approved in March 2004.
