There are numerous applications of the Autonomous Maintenance Technology (AMT) that have yet to be fully utilized or widely shared. There are many slow-moving operations conducted by Departments of Transportation (DOTs) with an attenuator (e.g., work zone set up, operations, take down, repairs, mowing, sweeping), platooning of two or more vehicles either directly in-line or with lateral offsets (e.g., snow removal), and roadside infrastructure (e.g., sensors, data architecture) that supports maintenance operations; all of which could benefit from autonomous or smart technologies. Moreover, there has been significant momentum recently by research institutions, DOTs at various levels, and equipment manufacturers to develop autonomous transportation technologies., Erika E. Miller, Chandler Young., "August 2023.", Includes bibliographical references (page 18), Report number CDOT-2023-14, Online resource; title from PDF cover (viewed March 2025)
Final report., Performed by University of Colorado at Boulder Dept. of Civil, Environmental & Architectural Engineering under contract no., "April 2004.", Includes bibliographical references (p. 44-46)., Mode of access: World Wide Web.
Cover title., In cooperation with the Federal Highway Administration., "May 1996.", Includes bibliographical references (leaves 108-113)., Mode of access: World Wide Web.
Over the years, Fiber Reinforced Polymer (FRP) composites have gained popularity in transportation infrastructure as a material able to restore and increase the capacity of existing concrete elements. Properties such as a high strength to weight ratio, non-corrosive nature, durability, and high malleability make FRP materials an appealing alternative in the reinforcement of these structural elements. However, there are still concerns regarding the long-term performance of these repairs. Numerous studies have been completed by means of accelerated aging in the lab. However, behavior of these materials under realistic field conditions has yet to be thoroughly researched. As a result, this project was created to assess the durability of an FRP repair in the Castlewood Canyon Bridge in Colorado. In addition, a laboratory study was conducted to determine the long-term behavior of concrete reinforced with FRP when exposed to various environmental conditions. The specific tasks in this project include data collection and testing plans for field assessment, on-site testing and sample collection, laboratory testing and data analysis, and testing program with a focus on the effects of deicers on FRP. A literature review was developed to consider other concerns that the Colorado Department of Transportation (CDOT) engineers may have on the subject., prepared by Rebecca A. Atadero, Douglas G. Allen, Oscar R. Mata,, Task 1: Collect information and develop data collection and testing plans for field assessment. The Castlewood Canyon bridge -- Renovation in 2003 -- Biannual bridge inspections -- Planning tests and locations -- Task 2: Conduct testing/observations on site and collect samples for the laboratory. Preliminary site visit -- Void detection -- Pull-off tests -- Collecting specimens for laboratory testing -- CFRP repair -- Task 3: Laboratory testing of FRP samples and analysis of data. Tensile tests -- Differential scanning calorimetry (DSC) -- Summary of field assessment and laboratory testing -- Task 4: Literature review on additional FRP topics. Fatigue of concrete beams with externally bonded FRP strengthening -- FRP durability under environmental and chemical exposure -- Existing design guidance -- Task 5: Establish long-term testing plan to consider the effect of deicers on FRP. Importance of FRP - concrete bond -- Bond tests -- Testing plan overview -- Environmental exposure scenarios -- Long term testing stages -- Test results -- Stage 1 results -- Stage 2 results -- Durability -- Evaluation of pull-off tests. Pull-off tests limitations overview -- Variations in the depth of cut -- Previous laboratory studies involving direct tension pull-off tests -- Previous field studies involving direct tension pull-off tests., "July 2013.", Research performed by Colorado State University, Department of Civil & Environmental Engineering., Bibliography: (pages 107-109)., Report No. CDOT-2013-13., Final report, Online resource; title from PDF cover (viewed March 2016)
Final report., Prepared in cooperation with the Federal Highway Administration under contract no., "October, 1996.", "CDOH-DTD-R-96-10.", Mode of access: World Wide Web.
Come with us and explore an area steeped in the Spanish Colonial Culture, whose roots go back in time to 1598. Explore Indian cultures going back to the prehistoric time of Bison Taylori and Folsom Man. Visit the sites of the old Spanish trails, old Spanish forts, acequias, livestock trails, and discover the churches that provided the impetus for exploration and Settlement. During your journey study the old trapper's creeks, and precious metal mines of the past., "December 1999.", "This document was made possible with the support and assistance of the Colorado Historical Fund, and the U.S. department of Transportation, and the Colorado Scenic Byways Commission.", Online resource; title from PDF cover (viewed May 2022)
This report evaluates the durability of mailboxes and energy absorbing mounting systems., Cover title., "September 2003.", "Report No. CDOT-DTD-R-2003-10.", Mode of access: World Wide Web.
Shows the mining techniques used to build the east tunnel of the Eisenhower Memorial Tunnel., presented by Federal Highway Administration in partnership with Colorado Division of Highways., video file MPEG 1289MB, "Produced by Morey Engle Productions; narration by Jim Redmond.", Produced by Morey Engle Productions, Title from opening screen., Based on DVD record
Ski areas and departments of transportation routinely use a variety of explosives-based and gas-based systems to generate overpressures resulting in loads sufficient to initiate snow avalanches. Various investigators including Johnson, Gubler, Miller, and Simione, explored phenomenon such as effect of blast height on snowpack response, snowpack acceleration as function of explosive blast, and air overpressures from select explosives or simulated remote avalanche control system (RACS) systems. But while there had been some fundamental research into general explosive effects, snow response and failure, there had not been an independent effort to examine the actual in-situ performance of various operational explosive delivery systems and technologies. The purpose of this study was to obtain in-situ measurement of overpressures developed during the operation of actual RACS installations. The study required development and deployment of a data collection system custom-designed for harsh environments, to be used to measure air pressures over snow during explosive events at a variety of test sites. The acquired measurements of the performance of a cross-section of available remote avalanche control systems provides the practitioner community with data quantifying RACS system performance, that may be helpful in making future system deployment decisions., Robb Larson, Brandt Seitz, Daniel Miller., "July 2022." -- Cover., "Report CDOT-2022-07.", "June 2022." -- Technical report documentation page., CDOT Study 5337.07, Online resource; title from PDF cover (viewed March 2025)
The United States must commit to metrication. Two overwhelming factors, the adoption of the metric system by the remainder of the world and the changing global economy, mandate that this nation must change. This Guide has been written to provide an explanation of the need for the change, and to serve as a resource to help bridge the gap between building roads in the English-based system of units and the Metric system. It is intended that this guide be used as a reference manual for CDOT employees in the Right-Of-Way, Design, Bridge, Materials, Traffic, Maintenance, Planning, and Environmental areas., "January 1994.", Online resource; title from PDF cover (viewed December 2015)
This research report used a pilot project to examine the Migratory Bird Treaty Act (MBTA) and how Colorado Department of Transportation (CDOT) transportation improvement projects may result in noise and vibration levels that could affect migratory birds. The pilot project examined the vibration and noise levels that occurred as a result of standard maintenance activities., Neal Goffinet and Tamara Keefe., "August 2018.", "Performing organization: Felsburg Holt & Ullevig.", Includes bibliographical references (pages 32-34), Report No. CDOT-2018-17, Online resource; title from PDF cover (viewed August 2019)
by Stephen M. Kalasz ... [et al.] ; prepared for Colorado Department of Transportation, Environmental Programs Branch ; prepared by Centennial Archaeology, Inc., Christian J. Zier, principal investigator., "Transportation Project IM 0252-360, I-25 Railroad Overpass.", Includes bibliographical references (p. 145-164).
by Stephen M. Kalasz ... [et al.] ; prepared for Colorado Department of Transportation, Environmental Programs Branch ; prepared by Centennial Archaeology, Inc., Christian J. Zier, principal investigator., "Transportation Project IM 0252-360, I-25 Railroad Overpass.", Includes bibliographical references (p. 145-164).
by Stephen M. Kalasz [and others] ; prepared for Colorado Department of Transportation, Environmental Programs Branch ; prepared by Centennial Archaeology, Inc., "Transportation Project IM 0252-370, I-25 Colorado Springs Design -Build.", Includes bibliographical references (pages 149-164)., Print version record.
by Stephen M. Kalasz [and others] ; with contributions by Danny N. Walker ; prepared for Colorado Department of Transportation Environmental Programs Branch ; prepared by Centennial Archaeology Inc., Chapter 1: Introduction -- Chapter 2: Environment -- Chapter 3: Culture history -- Chapter 4: Research Orientation -- Chapter 5: Field and laboratory techniques -- Chapter 6: Field investigations -- Chapter 7: Synthesis, interpretations and management recommendation -- References cited. CDRom: Guide to appendixes and associated codes -- Appendix A: Radiocarbon analysis data --Appendix B: Lithic analysis data -- Appendix C: Faunal analysis data., "August 2008.", "Colorado Department of Transportation project IM 0252-391, Ridgegate Interchange.", "All Work Performed under the terms and Conditions of State of Colorado Archaeological Permit No. 2006-74.", Includes bibliographical references (pages 289-324)., Print version record.
