CO 9 Iron Springs Alignment

About the Project

The Iron Springs Alignment project will realign and widen a 1.3-mile stretch of SH 9, and improve the recreation path south of Frisco.

The project, which started in May 2016, has two phases:

• Phase 1: through November 2016, followed by a winter shutdown
• Phase 2: Work resumes in May and runs through December 2017.

Crews will work from 7 a.m. to 6 p.m., Monday through Saturday. Note that Saturday work will not impact traffic.

This project will

• provide a four-lane reduced section roadway while moving the highway away from Dillon Reservoir.
• shorten SH 9 by approximately 0.4 mile.
• straighten the highway to remove a tight, compound curve (aka, Leslie's Curve), close to Dillon Reservoir. Eliminating this curve will reduce accidents, thereby increasing roadway safety, and will improve water quality and drinking water protection.
• realign Blue River Bikeway, moving a portion of the path to the current SH 9 alignment and thus increasing it by 0.4 miles, and smoothing the surface.
• move the existing Dickey Day Use Parking Lot west to a new location, allowing access via the existing signalized intersection at SH 9 and Recreation Way. A trail connection will provide connectivity between the new parking lot and realigned bikeway, as well as lake access.

Finding of No Significant Impact (FONSI)

CDOT and the Federal Highway Administration (FHWA) issued a Finding of No Significant Impact (FONSI) for the SH 9 Iron Springs Alignment Project.

Before the FONSI, CDOT and FHWA prepared an Environmental Assessment (EA), released it for public review and comment, and held a public hearing. The FONSI includes responses to comments received during the EA public comment period, including those received at the public hearing.

• View or download the Finding of No Significant Impact.

Environmental Assessment

• Download the Environmental Assessment and technical appendices.
• View the July 29, 2014, Public Hearing display boards and presentation.