TRA Colorado Department of Transportation

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: High-capacity flexpost rockfall fences; Designs of high-capacity rockfall fences are developed through numerical simulations of rockfall impacts and through a prototype test. Based on the existing design of the Colorado DOT flexpost fence, three designs at 80,000 ft-lb rockfall capacity are developed. The three designs provide for fences of 10, 16 and 24 foot height, and all use steel gabion mesh for fence fabric. A fourth design using steel cable net for fabric on a 10 foot tall fence was constructed as a full-scale prototype and tested with freely falling boulders. The cable net design has a rockfall capacity of 125,000 ft-lb. A description of flexpost fences, maximum forces in components of fences, sizes of components for the four designs of fences, computer models for numerical simulations, and results of simulations are presented. A summary of prototype tests is presented. A list of suppliers of cable and wire mesh products is provided., George Hearn., "December 1992, with addendum on prototype testing, May 1994, for Research Branch, Colorado Department of Transportation.", Issued by the Colorado Division of Transportation Development., Includes bibliographical references., Print version record.

: High-speed rail feasibility study; This study evaluated the I-70 corridor from Denver International Airport (DIA) to Grand Junction. I-70 serves as a gateway to more than twenty world-class recreation resorts. The topography of the corridor creates unique transportation challenges - challenges that can be hampered by unpredictable weather and travel patterns year round. It also evaluated the I-25 corridor from Cheyenne, WY to Trinidad, CO, passing through the metropolitan areas of Fort Collins, Denver, Colorado Springs and Pueblo along the way. I-25 connects Colorado's growing metropolitan areas along the Front Range. These communities comprise rapidly growing cities and towns with significant commercial and recreational centers., submitted by Transportation Economics & Management Systems, Inc. in association with Quandel Consultants, LLC, [and] GBSM, Inc. ; submitted to Rocky Mountain Rail Authority., Executive summary -- Final report -- Appendices., "March 2010.", The Colorado Department of Transportation, Division of Transit and Rail worked with the Rocky Mountain Rail Authority to fund the study., Description based on online resource; title from PDF final report cover; (viewed November 2023)

: Highway 9, Frisco to Breckenridge final environmental impact statement : State Highway 9 record of decision; "May 2004.", FHWA-CO-EIS-02-01-F.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix A: Safety Assessment Report and Accident Data; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix B: Year 2025 Traffic Projections; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix C: Alternative Alignment Maps; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix D: Value Engineering Study; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix E: Noise Appendix; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix F: Wetland Finding; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix G: Biological Assessment; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix H: Water Quality/Water Resources; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix I: Interagency Correspondence; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Appendix J: Farmland Conversion Impact Rating; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Chapter 1: Purpose and Need; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Chapter 2: Alternatives; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Chapter 3: Existing Environment, Impacts and Mitigation; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Chapter 4: Cumulative Impacts; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Chapter 5 and 6: Public Involvement, Project Coordination and References; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

: Highway US 550 corridor improvements from state line north to County Road 220 environmental assessment. Cover and Table of Contents; "NH5501-011, Project Control Number 12979.", "Submitted pursuant to 42 U.S.C. 4332 (3) (C)", "July 2005."--Cover., "Prepared for CDOT Region 5."--Cover., Prepared by URS.

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