Environmental Assessment

The project team has completed the Environmental Assessment and has moved into the construction phase.

I-25 South Gap: Monument to Castle Rock Environmental Assessment

In May 2017, CDOT and Federal Highway Administration (FHWA) released the I-25 South Gap: Monument to Castle Rock Environmental Assessment (EA) for public comment.

Preferred Alternative:

CDOT proposed expanding I-25 between Monument and Castle Rock by adding a new tolled Express Lane in each direction, widening shoulders, replacing outdated infrastructure and addressing design deficiencies of the aging roadway, adding wildlife underpasses, and modernizing the facility with improved drainage, lighting, communications, power, and signage.

All improvements are planned within CDOT's right of way, and no property acquisition is anticipated.

EA Review:

  • CDOT Region 1
    7328 S. Revere Parkway
    Unit 204A
    Centennial, CO 80112
  • CDOT Region 2
    1480 Quail Lake Loop
    # A,
    Colorado Springs, CO 80906
  • Douglas County Administration Building
    100 Third Street
    Castle Rock, Colorado 80104
  • El Paso County Administration Building
    Centennial Hall
    200 South Cascade
    Suite 100
    Colorado Springs, CO 80903-2208
  • FHWA
    Colorado Division
    12300 West Dakota Avenue
    Suite 180
    Lakewood, CO 80228
  • Larkspur Town Hall
    8720 Spruce Mountain Road
    Larkspur, CO 80118
  • Pikes Peak Library District
    Monument Library
    1706 Lake Woodmoor Drive
    Monument, Colorado 80132

The 30-day review period will close on May 29, 2018.

Public Hearings:

Members of the public were invited to attend public hearings to provide input on the proposed project and EA conclusions. CDOT presented the preferred alternative for the I-25 South Gap Project, findings of the EA, and information about the next steps in the project schedule. Two public hearings for this project were held at the following:

5:30-7:30 p.m.
Monday, May 14, 2018
Event Center, Douglas County Fairgrounds
500 Fairgrounds Drive
Castle Rock

5:30-7:30 p.m.
Wednesday, May 16, 2018
Liberty High School
8720 Scarborough Drive
Colorado Springs


CDOT and FHWA reviewed and considered all comments. Through this process, CDOT and FHWA decided to move forward with the preferred alternative.

All comments received during the comment period, including at the hearing, are part of the project record and received a written response, which is included with the finding of no significant (FONSI) impact report.

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