This project focused on the chloride-induced corrosion of reinforcing steel in structural concrete. The primary goal of this project is to analyze the surface chloride concentration level of the concrete bridge decks throughout Colorado. The study indicates three factors that can affect chloride concentration levels in bridge decks: age of the concrete, traffic, and weather. Samples were collected from decks and curbs of bridges in different climate regions with various concrete ages and traffic levels. Water-soluble chloride concentrations were tested for all samples. Chloride concentration profiles for all the locations were listed and plotted. The deepest concrete powder was collected at a depth of 2 inches. The rebar level of the bridge was usually at or below this depth. The chloride concentrations of most bridge decks were below the critical values at the rebar level. The chloride concentrations of bridge decks are usually greater than that of bridge curbs. However, these bridge curbs showed deeper chloride penetration than the bridge decks. Younger bridges had much lower chloride concentrations, which is expected. Heavier traffic resulted in higher chloride concentrations. The bridges built in colder regions had a higher chloride concentration up to 2" depth (the rebar level). Climate may be the most significant influential factor among age, traffic, and climate when considering chloride concentration of bridge decks in Colorado. Corrosion protection should focus on the bridges decks who locate in the cold climate zone and with high traffic volume., Yunping Xi, Yuxiang Jing, Renee Railsback., "January 2018.", "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration"--Technical documentation report page., Includes bibliographical references (pages 38-40)., Final., Online resource; title from PDF cover (viewed August 2019), Report No. CDOT-2018-05
Pavement construction and maintenance problems due to the presence of sulfates in limestabilized subgrade soils have been widely reported in many transportation projects. In Colorado, problems associated with sulfate-induced distresses have been observed at the Denver International Airport and, more recently, at the U. S. Highway 287 Berthoud By-pass project. It would be desirable if CDOT engineers could count on alternative soil stabilization techniques that are not affected by the potential presence of sulfates., Antonio Carraro, Emily Budagher, Mahir Badanagki, Jong Beom Kang., "Sponsored by the Colorado Department of Transportation In Cooperation with the U.S. Department of Transportation, Federal Highway Administration.", "July 2013.", Bibliography: pages 22-24., Report No. CDOT-2013-2, Final Report., Online resource; title from PDF cover (viewed March 2016)
This report provides a synthesis on the use and design of snow sheds to protect transportation corridors against avalanches. This report summarizes the various snow shed designs and standards, regulation environment, construction and operational costs, risk, benefits, loading considerations, operational and design considerations, and alternate methods employed when snow sheds are no longer needed, or when alternative long-term mitigation measures are employed., Jordy Hendrikx, Alan Jones, Andrew Schauer, Ryan Buhler., "October 2020.", "Performing organizations: Snow and Avalanche Laboratory, Department of Earth Sciences, Montana State University, Bozeman, MT, USA; Dynamic Avalanche Consulting, Revelstoke, BC, Canada.", Includes bibliographic references., Report No. CDOT-2020-13.", Online resource; title from PDF cover (viewed March 2021)
Ahmad Ardani., Prepared in cooperation with the Federal Highway Administration., Technical Report number: CDOT/DTD/R-91/3., Includes bibliographical references (page 20)., Print version record.
Uncritical discussion of the mega project to expand I25 through Denver, Colorado., video file MPEG 620MB, T-REX Partners: Colorado Department of Transportation, Regional Transportation District, ONEDOT, and Southeast Corridor Construction., Produced by Toni Gatzen., Produced by Amy Ford., Narration by Mark Cardonella., Based on VHS record.
Series of short videos about Colorado Department of Transportation's effort to keep people safe on the roadways, to design and build I-70 east and help travelers deal with the vagaries of the I-70 mountain corridor., video file MPEG 103MB, Avalanche mitigation -- I-70 east -- I-70 mountain corridor -- 2011-2014 highlights., Produced by Colorado Department of Transportation., Online resource; title from opening screen (viewed January 2020)
"Colorado Department of Transportation has contracted with Colorado Logos, Inc. to administer the TODS Program for the State of Colorado.", Description based on online resource; title from PDF column (viewed June 2014)
This resource is intended to provide information regarding Colorado's 15 Transportation Planning Regions (TPRs) and two Indian Tribes. As a whole, one can see how TPRs relate geographically and can compare statistical information on population trends and other facts specific to each region., Description based on online resource; title from PDF cover (viewed September 2013)
submitted by CDOT Division of Transit and Rail (DTR)., "Draft: June 3, 2013. Revised: April 30, 2014.", Online resource; title from PDF cover (viewed January 2018)
If you occupy a residential property that is located within an area the state must acquire for public is located within an area the state must acquire for public roads, the state follows a set of federally mandated procedures to buy the property and help you relocate to another property., Online resource; title from PDF caption (viewed January 2018)
