Library

Completed Studies

US 550 Environmental Assessment & Finding Of No Significant Impact

The Colorado Department of Transportation (CDOT), in cooperation with the Federal Highway Administration (FHWA), prepared this Environmental Assessment (EA) of the potential environmental, social, and economic impacts of proposed improvements to US 550. The purpose of the project is to improve safety and meet projected demand for highway capacity between Durango, Colorado, and the New Mexico line. The improvements will be located entirely in La Plata County, Colorado. Keywords: Studies, US Highways

CDOT Rail Relocation Implementation Study

As the Front Range has grown, there has been much discussion of the need to relocate through-freight train traffic away from the communities along the Front Range. In 2002 BNSF and UP proposed a Front Range Railroad Infrastructure Rationalization Project, which would improve and relocate freight rail infrastructure, moving through-freight traffic east of the Front Range while still maintaining local freight service. Keywords: Studies, Non-Highways

North I-25 Planning Environmental Linkage (PEL) Study

The North I-25 PEL Study will investigate the more localized congestion in the general purpose lanes and define a range of improvements needed to reduce congestion, and improve operations and safety of the section of Interstate 25 from US 36 to State Highway 7 as well as that of the interchange connectors. Keywords: Construction Complete, Studies, Interstates

I-70/Kipling Interchange PEL Study

The I-70/Kipling PEL Study will provide an understanding of the existing conditions of the interchange and develop a range of improvements to reduce congestion and improve operations and safety of the interchange area along I-70 and Kipling Street (SH 391). Keywords: Studies, Interstates

AGS Feasibility Study

Advanced Guideway System (AGS) Feasibility Study - This study is a result of the Colorado Department of Transportation's (CDOT’s) and FHWA’s selection of the I-70 Mountain Corridor Preferred Alternative which specifies in order to best meet the purpose and need of a transportation solution on the Mountain Corridor, a multi-modal solution is needed including implementation of an Advanced Guideway System (AGS). Keywords: Studies, Interstates, Non-highways

Interregional Connectivity Study

The Colorado Department of Transportation (CDOT) Division of Transit & Rail recently kicked off an Interregional Connectivity Study (ICS), which will examine technology, alignment, and financial/funding options for implementing high speed rail along the Front Range. Keywords: Studies, Non-highways, high speed rail

I-70 Reversible (Zipper) Lane Study Phase II

December 2012 - This Phase II I-70 Reversible Lane Feasibility Study report provides information on the benefits and risks associated with Reversible Lane implementation along the I-70 Mountain Corridor. This document builds on the information provided in the Phase I analysis and discusses the trade-offs that must be considered prior to implementation. Keywords: Studies, Interstates, zipper lanes, reversible lanes

I-70 East Environmental Impact Statement (EIS)

In July 2003, CDOT and Denver’s Regional Transportation District (RTD) began a joint study effort called the I-70 East Corridor Environmental Impact Statement (EIS). An EIS is typically a three to five-year decision-making process required before any major federally-funded transportation project can be built. The EIS ensures that issues affecting the community and the environment are identified and considered before making a final decision. The process is conducted by local, state, and federal agencies and is a requirement of the National Environmental Policy Act (NEPA). The purpose of the I-70 East Corridor EIS was to improve transportation along the I-70 highway corridor from I-25 to Tower Road and to explore potential rapid transit options from Downtown Denver to Denver International Airport. Keywords: Studies, Interstates

US 6 & Wadsworth Boulevard Environmental Assessment

The Colorado Department of Transportation (CDOT) has prepared an Environmental Assessment (EA) in conjunction with the study of possible improvements to the US 6 (6th Avenue) and Wadsworth Boulevard interchange and to Wadsworth Boulevard from approximately 4th Avenue to 14th Avenue. Keywords: Studies, US Highways

Cheyenne Military Operations Area Modification Environmental Study

This airspace proposal will raise the flight floor in the existing Cheyenne military operations area from 300 to 500 feet above ground level, decreasing noise impacts on the ground in areas that underlie the current training airspace. Through consultation with Native American tribes, the Colorado Air National Guard has agreed to maintain a 5-nautical mile radius buffer around the center of the Sand Creek Massacre National Historical Site, Colo., with a flight floor of 5,000 feet above ground level. The training airspace is also expanding into Kansas, decreasing density of military aircraft in the military operations area.

I-225 PEL Yosemite Street to I-25

CDOT is conducting a Planning and Environmental Linkages (PEL) study to improve conditions along Interstate 225 (I-225) from Yosemite Street to I-25 in Denver. Keywords: Studies, Interstates, PEL

US 6 Clifton Transportation Study

The US 6 Clifton Transportation Study is a Planning and Environmental Linkages (PEL) study that will analyze transportation issues and explore a range of short- and long-term improvements to improve operational performance and safety and potentially reduce congestion along the US 6C corridor in unincorporated Mesa County. Keywords: Studies, US Highways, PEL

City of Aurora 6th Avenue Parkway Extension Environmental Assessment

The City of Aurora, in consultation with the Federal Highway Administration and the Colorado Department of Transportation, is proposing to construct the 6th Avenue Parkway Extension along a new roadway alignment between Colorado Highway (CO) 30 and the 6th Avenue Parkway/E-470 Tollway interchange. The Proposed Action is in the northeastern portion of Aurora, Colo., and falls partially with Aurora and partially within unincorporated Arapahoe County. The Proposed Action would close an almost two-mile gap in the major arterial street system, and would include a crossing of Sand Creek and its associated floodplain. The project has been identified in previous planning studies dating back as early as 1986, and has been identified as a priority project by the Aurora City Council. Keywords: Studies, Non-Highways

Federal Blvd EA & FONSI, West 7th Avenue-West Howard Place

The Federal Highway Administration (FHWA), the Colorado Department of Transportation (CDOT), and City and County of Denver announce the availability of the Federal Boulevard Improvements project between West 7th Avenue and West Howard Place Environmental Assessment (EA) & FONSI. Keywords: Active Studies, State Highways

US 24 West

The Colorado Department of Transportation (CDOT) and the Federal Highway Administration (FHWA) assembled a team to study short- and long-term strategies to address capacity issues on the US 24 West corridor from Manitou Springs to I-25. The team consists of CDOT, FHWA, and the consulting firms of CH2M HILL and Wilson & Company. Keywords: Studies, US Highways

I-70 Reversible (Zipper) Lane Study Phase I

Gerogetown to Floyd Hill - Phase 1 Feasibility Study - August 10, 2010 Gerogetown to Floyd Hill - Phase 1 Feasibility Study - August 10, 2010 -The Colorado Department of Transportation (CDOT) is considering a reversible zipper lane on I-70 west of Denver to manage congestion during peak times on winter Sundays. The current strategy under consideration calls for an eastbound reversible lane to begin west of Empire Junction (approximately Milepost 230.5) and for the lane to terminate at the base of Floyd Hill (Milepost 244.0). Keywords: studies, interstates, zipper lane

CO 392 Environmental Overview Study (EOS)

The CO 392 Environmental Overview Study identified a transportation solution supported by local and regional planning partners that identifies right of way, which must be preserved for improvements. This plan will be used by planners to set aside right of way as development occurs along the corridor. The CO 392 EOS study limits are from CO 287 to the west to Weld County Road (WCR) 23 to the east. Keywords: Studies, State Highways, Construction Complete


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