This report presents the development of ultra-high performance concrete (UHPC) using locally available materials that reduce construction costs compared with commercial products. With the aim of achieving a specified compressive strength of 20 ksi, a UHPC mixture is formulated. The implications of various constituent types are examined with an emphasis on silica compounds (silica fume, silica powder, silica sand, finer silica sand, pyrogenic silica, and precipitated silica), including steel and polypropylene fibers. Bond tests are conducted to evaluate the development length of the UHPC. Cost analysis shows that the prototype UHPC is up to 74% less expensive than commercial products., Yail Jimmy Kim., "May 2018.", Performing organization: University of Colorado Denver.", Includes bibliographical references (pages 52-56), Report No. CDOT-2018-15, Online resource; title from PDF cover (viewed August 2019)
This project aims to assist CDOT with the initial implementation of Section 118 of Colorado HB 21-1303, "The Buy Clean Colorado Act". The bill requires contractors to submit Environmental Product Declarations (EPDs) for asphalt and asphalt mixtures, cement and concrete mixtures, and steel installed on CDOT projects. Ultimately, the bill instructs CDOT to establish greenhouse gas (GHG) emission limits for these materials, and contractors on CDOT construction projects will need to comply with the limits established by CDOT. The objectives of this study were to assess the current state-of-the-practice of EPDs in construction material manufacturing; to educate stakeholders regarding life cycle assessment (LCA) and EPDs; and to help develop protocols uniquely suited to Colorado that CDOT and material producers can use to integrate EPDs into the framework of Buy Clean Colorado., Chrstopher T. Senseney., Research brief -- Report., "February 2023.", "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration.", Includes bibliographical references page 10., Report No. CDOT-2023-01., Online resource; title from PDF cover (viewed January 2024)
This research project enables CDOT to answer the question of whether or not pedestrians and bicyclists are being adequately accommodated by establishing Colorado-specific methodologies for estimating bicycle and pedestrian volumes via a limited sample of existing counts., Krista Nordback, Wesley E. Marshall, Bruce N. Janson., "October 2013.", Includes bibliographical references., Performed by University of Colorado Denver Department of Civil Engineering College of Engineering and Applied Science, sponsored by Colorado Department of Transportation. Prepared in cooperation with the US Department of Transportation, Federal Highway Administration. -- Technical report documentation page., Report no. CDOT 2013-18., Final report., Cover title.
A new service life chart for steel pipes was developed based on the information collected from the field observations and data analysis. Pipe failure criteria were established in accordance with the ongoing culvert evaluation procedure along I-70 and I-25. For the steel pipe failure cases along I-70 and I-25, the previously published service life predictors for steel pipes deviated from observations by as much as 10 times., "November 2009.", "Report No. CDOT-2009-11, Final Report.", "Sponsored by the Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation, Federal Highway Administration.", Mode of access: World Wide Web.
Final report., Sponsored by the Colorado Department of Transportation., "June, 2001.", Includes bibliographical references (p. 50-53)., "Report no. CDOT-DTD-R-2001-11.", Mode of access: World Wide Web.
This report develops a framework for organizing risk-based decisions about design, maintenance, and operation for the Colorado Department of Transportation (CDOT) applying to various types of facilities. It also provides illustrative examples for the use of the proposed framework. CDOT has an opportunity to be a national leader in assessing risks, vulnerabilities, consequences and outcomes through the implementation of a risk-based framework for facility design, operations and maintenance., Ross B. Corotis, Abbie B. Liel, Yolanda C. Lin, Abhishek Paul., "June 2014.", Bibliography: pages 97-103., Report No. CDOT-2014-4., Online resource; title from PDF cover (viewed April 2016)
Final report., Performed by Nichols Consulting Engineers, Chtd., sponsored by Colorado Dept. of Transportation in cooperation with the Federal Highway Administration., "September 2002.", Includes bibliographical references (p. 61)., "Report no. CDOT-DTD-R-2002-09.", Mode of access: World Wide Web.
In recent years, prestressed concrete bridges have dominated the bridge type selection processes in Colorado. This can be attributed to a lack of steel mills combined with a strong presence of precast fabricators in the region. In addition, a lack of read
prepared for the Colorado Scenic and Historic Byway Program, Dinosaur Diamond ; prepared by Prism Interpretive Services ; in association with: Utah State Scenic Byways, Colorado State Scenic Byways, the Museums of Western Colorado--Dinosaur Journey, Bureau of Land Management, Utah Friends of Paleontology., "October 2016.", "Funding for the Dinosaur Diamond Corridor Management Plan was provided by the Colorado State Scenic and Historic Byway Program, through the Colorado Department of Transportation CDOT." -- First unnumbered page., Online resource; title from PDF title page (viewed March 2025)
prepared for the Dinosaur Diamond Parnership, Inc. ; prepared by Steven P. Walker, Marian Eason,, "August 2000.", Includes bibliographical references., Online resource; title from PDF cover (viewed March 2025)
Cover title., Southwest. Alpine Loop ; Trail of the Ancients ; San Juan Skyway ; Uanweep/Tabeguache ; West Elk Loop -- North Central. Guanella Pass ; Mount Evans ; Peak to Peak ; Cache la Poudre--North Park -- Northwest. Colorado River Headwaters ; Flat Tops Trail ; Grand Mesa -- South Central. Los Caminos Antiguos ; Top of the Rockies ; Silver Thread ; Gold Belt Tour ; Frontier Pathways -- Northeast. Pawnee Pioneer Trails ; South Platte River Trail -- Southeast. Highway of Legends ; Santa Fe Trail., Mode of access: World Wide Web.
