TRA Colorado Department of Transportation

Pages

Evaluation of alternative anti-icing and deicing compounds using sodium chloride and magnesium chloride as baseline deicers, phase I
Evaluation of alternative anti-icing and deicing compounds using sodium chloride and magnesium chloride as baseline deicers, phase I
"Sponsored by the Colorado Department of Transportation, in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", "February 2009.", "Report No. CDOT-DTD-R-2009-1.", Includes bibliographical references., Mode of access: World Wide Web.
Evaluation of bridge deck sealers
Evaluation of bridge deck sealers
This study focuses on the evaluation of bridge deck sealers commonly used on highway bridge decks and their relative performance., Yu-chang Liang, Benjamin Gallaher, Yunping Xi., "June 2014.", Prepared in cooperation with the US Department of Transportation, Federal Highway Administration., Bibliography: pages 54-57., Report No. CDOT-2014-6., Online resource; title from PDF cover (viewed April 2016)
Evaluation of debris flow removal protocol, mitigation methods, and development of a field data sheet
Evaluation of debris flow removal protocol, mitigation methods, and development of a field data sheet
"December 2006.", "Report No. CDOT-2006-16.", Includes bibliographical references (p. 14-15)., Final report., Mode of access: World Wide Web.
Evaluation of different types of waterproofing membranes (asphaltic and non-asphaltic) as cost effective bridge deck barriers in reducing corrosive chloride effects
Evaluation of different types of waterproofing membranes (asphaltic and non-asphaltic) as cost effective bridge deck barriers in reducing corrosive chloride effects
In the past several decades, reinforced concrete structures have deteriorated similarly by chemical attack, especially chloride attack. For highway bridges, this phenomenon becomes more severe since bridges are exposed to extreme environmental conditions, such as snow and ice. In an effort to better protect the bridge decks and reduce maintenance costs. The use of WPMs was investigated by the Colorado Department of Transportation (CDOT) to analyze the performance of four products as an effective protection system., Yunping Xi, Linfei Li, René Railsback., "June 2018.", "Performing organization: University of Colorado, Department of Civil Engineering.", Includes bibliographical references (pages 60-62), Report No. CDOT-2018-16, Online resource; title from PDF cover (viewed August 2019)
Evaluation of environmental commitment tracking systems for use at CDOT
Evaluation of environmental commitment tracking systems for use at CDOT
Description based on online resource; title from PDF title page; (viewed December 2011), "Sponsored by the Colorado Department of Transportation in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", "October 2011.", "Report No. CDOT-2011-13. Final report."--Cover., Includes bibliographical references (p. 57-61)
Evaluation of guardrail embedded lighting system in Trinidad, Colorado
Evaluation of guardrail embedded lighting system in Trinidad, Colorado
This report provides information on the design considerations of the embedded highway lighting design on Interstate-25 in Trinidad, Colorado, in terms of visibility. The information is based on visibility characterizations of small targets using luminance, illuminance, and contrast calculations as well as participant input on the detectability of small targets., Travis N. Terry, Ronald B. Gibbons., "February 2014.", Bibliography: page 47., "Sponsored by the Colorado Department of Transportation, in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", Report no. CDOT 2013-17., Final report., Online resource; title from PDF cover (viewed March 2016)
Evaluation of longitudinal joint tie bar system
Evaluation of longitudinal joint tie bar system
An adequate longitudinal joint tie bar system is essential in the overall performance of concrete pavement. Excessive longitudinal joint openings are believed to be caused by either inadequate tie bar size or spacing or improper tie bar installation. If designed and installed properly, tie bars prevent the joints from opening and consequently improve load transfer efficiency between slabs and between slabs and shoulders, resulting in increased load carrying capacity. CDOT should adopt the mechanistic-empirical tie bar design procedure developed in this study., "Report No. CDOT-20011-12. Final Report."--Cover., Description based on online resource; title from PDF title page (viewed December 2011), "'September 2011.", "Sponsored by the Colorado Department of Transportation in cooperation with the U.S. Department of Transportation, Federal Highway Administration.", Includes bibliographical references (p. 84-85)
Evaluation of premature PCCP longitudinal cracking in Colorado
Evaluation of premature PCCP longitudinal cracking in Colorado
"Report No. CDOT-DTD-R-2003-1.", "January 2003.", Final report., Mode of access: World Wide Web.
Evaluation of products that protect concrete and reinforcing steel of bridge decks from winter maintenance products
Evaluation of products that protect concrete and reinforcing steel of bridge decks from winter maintenance products
The results of this study confirm the performance of the baseline CDOT bridge deck mixes/systems, indicate some new products that show promise for implementation, and suggest that combinations of products might be the best approach to protection for Colorado bridge decks exposed to deicing chemicals., "December 2006.", "Report No. CDOT-2006-4.", Mode of access: World Wide Web.
Evaluation of seismic testing for quality assurance of lime-stabilized soil
Evaluation of seismic testing for quality assurance of lime-stabilized soil
This study sought to determine the technical feasibility of using seismic techniques to measure the laboratory and field seismic modulus of lime-stabilized soils (LSS), and to compare/correlate test results from bench-top (free-free resonance) seismic testing on LSS cylinders to in-situ (surface seismic) testing performed on field-constructed LSS. In addition, this research sought to develop a pilot specification for quality assurance (QA) of LSS using seismic test methods., by principal investigators, Michael A. Mooney, Richard G. Bearce., "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration"--Technical report documentation page., "Prepared by Colorado School of Mines Dept. of Civil and Environmental Engineering.", "August 2013.", Bibliography: pages 74-76., Report no. CDOT 2013-15., Grant number 80-30, Final report., Online resource; title from PDF cover (viewed March 2016)
Evaluation of selected deicers based on a review of the literature
Evaluation of selected deicers based on a review of the literature
Final report., Performed by The SeaCrest Group in cooperation with the Federal Highway Administration for Colorado Dept. of Transportation at the request of the Colorado Association of Ski Towns (CAST) under contract no., "October 30, 2001.", Includes bibliographical references (p. 111-117)., Mode of access: World Wide Web.
Evaluation of slope stabilization methods (US-40 Berthoud Pass)
Evaluation of slope stabilization methods (US-40 Berthoud Pass)
Construction report., Cover title., Prepared in cooperation with the Federal Highway Administration., "March 1996.", Description based on print version record.
Evaluation of slope stabilization methods (US-40 Berthoud Pass)
Evaluation of slope stabilization methods (US-40 Berthoud Pass)
Final report., Performed in cooperation with the Federal Highway Administration., "July 2002.", Includes bibliographical references (leaf 9)., Mode of access: World Wide Web.
Evaluation of soil resources for sustained vegetative cover of cut-slopes along I-70 near Straight Creek
Evaluation of soil resources for sustained vegetative cover of cut-slopes along I-70 near Straight Creek
A report that evaluates the stability of re-vegetation of high elevation, decomposed, granite cut-slopes by using repeated applications of soil amendments., prepared by Vic Claassen., Introduction -- Methods -- Results -- Conclusions and recommendations -- References -- Appendix A: Reference graphs for N release from previous studies., "Sponsored by Colorado Department of Transportation in cooperation with the U.S. Department of Transportation Federal Highway Administration, Colorado Department of Transportation - Research Branch.", "July 2013.", Includes bibliographical references., Report no. CDOT 2013-14., Final report., Online resource; title from PDF cover (March 2016)
Evaluation of tack coat bond strength tests
Evaluation of tack coat bond strength tests
Poor bonding between asphalt pavement overlays and the substrate pavement layer can greatly influence the long term performance of hot mix asphalt (HMA) in the form of premature cracking and fatigue. The primary method to achieve bonding between layers is by hot mix asphalt (HMA) in the form of premature cracking and fatigue. The primary method to achieve bonding between layers is by using an asphalt emulsion tack coat. Additionally, field staff is charged with determining whether an existing pavement, especially a milled surface, is clean enough prior to tack coat placement, to ensure an adequate bond., Scott Shuler., "May 2018.", "Performed internally by CDOT-Research Office and Colorado State University.", Report No. CDOT-2018-14, Online resource; title from PDF cover (viewed August 2019)
Evaluation of the FHWA traffic noise model, TNM, for highway traffic noise prediction in the state of Colorado
Evaluation of the FHWA traffic noise model, TNM, for highway traffic noise prediction in the state of Colorado
In 2002, CDOT undertook this study in an effort to better understand the complexities of the Federal Highway Administration's new Traffic Noise Model (TNM). The research involved three analysis., "Report No. CDOT-2005-21.", "November 2006.", "Sponsored by: Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation Federal Highway Administration.", Includes bibliographical references (p. 30).
Evaluation of the FTP-retrofitted arches in the Castlewood Canyon bridge
Evaluation of the FTP-retrofitted arches in the Castlewood Canyon bridge
[Vol. 1] Final report -- [vol. 2] Appendices A-H., Cover title., "Report No. CDOT-DTD-R-2005-01.", "December 2004.", Includes bibliographical references.
Evaluation of the FTP-retrofitted arches in the Castlewood Canyon bridge. Appendices
Evaluation of the FTP-retrofitted arches in the Castlewood Canyon bridge. Appendices
[Vol. 1] Final report -- [vol. 2] Appendices A-H., Cover title., "Report No. CDOT-DTD-R-2005-01.", "December 2004.", Includes bibliographical references.
Evaluation of the performance, cost-effectiveness, and timing of various pavement preservation treatments
Evaluation of the performance, cost-effectiveness, and timing of various pavement preservation treatments
This research is being conducted to evaluate the performance of various pavement preservation treatments over time and under different environmental conditions to quantify the economics of each treatment type. There are three primary techniques utilized in Colorado for preservation of asphalt pavements and three for concrete pavements., "October 2010.", "Report No. CDOT-DTD-R-2010-3.", "Final report.", "Sponsored by Colorado Department of Transportation in cooperation with the US Department of Transportation, Federal Highway Administration.", Includes bibliographical references (p. 134-135, A-41-A-43), Mode of access: World Wide Web.

Pages