The first Colorado Department of Transportation (CDOT) installation of polyethylene pipes for culvert use was in 1988, on SH 50, north of Olathe. Five to ten feet of well compacted in-situ material was used as backfill. No obvious deflections occurred in the pipe during or after construction, or as a result of in-service live loads. After three years of service, the pipes have not cracked, melted, or worn, and are in good overall condition. One culvert, however, burned for about ten feet into one end as a result of the ignition of sawdust that had collected in it from a nearby sawmill. This section of pipe was replaced. A literature search found that with proper backfill, loads of 100 ft of fill could safely be supported. Some pipes, however, were reported to have deformed excessively even with small loads. These were for the most part 12 in. and 15 in. diameter pipes that had a thinner wall, and were not well supported. The main advantages of polyethylene pipes are: light weight, easier installation, corrosion resistance, and relatively good aesthetic qualities. Plastic pipe is a current option for use in the 1991 Colorado Standard Specifications. In most cases it will be left up to the contractor to determine which pipe material to use to meet the specifications for each particular project. Adequate wall thicknesses and corrugations should be specified. Only Class 1 or better material, compacted in thin lifts to 95% maximum density, should be used. Extra care should be taken to compact under the haunches. With care, fills of at least 50 ft are possible., Thomas R. Hunt., In cooperation with the Federal Highway Administration., "July 1991.", Final report., Print version record.
The Pontis Bridge Inspection Coding Guide was developed by the Staff Bridge Branch of the Colorado Department of Transportation. This revision includes cross references to the General Comments and Definitions necessary to provide for uniform inspection reports from various bridge inspectors and is intended to supplement the AASHTO Guide for Commonly Recognized (CoRe) Structural Elements with clarifying information and additional elements unique to Colorado bridges and structures. If conflicts occur between the guides, the AASHTO guide governs., "October 1998."--Page footer., Description based on online resource; title from PDF cover (viewed September 2013)
This report analyzes the Quality Control/Quality Assurance (QC/QA) data for Portland cement concrete pavement (PCCP) awarded in the years 2000 through 2009. Analysis of the overall performance of the projects is accomplished by reviewing the Calculated Pay Factor Composite (CPFC) and Incentive/Disincentive Payments (I/DP). Analysis of each of the test elements: thickness, compressive strength, sand equivalent, and flexural strength is also completed. The results of the evaluation are presented in tables, figures, and reports. The overall quality of PCCP evaluated is very high. The quality levels in each of the elements are approaching the maximum of 100%. The pay factors for the individual elements are also close to their maximums. The material being produced is well above the minimum standards set by the specifications., "April 2011.", "Report No. CDOT-2011-5. Final Report.", "Prepared in cooperation with the US Department of Transportation, Federal Highway Administration."--P. [i], Description based on online resource; title from PDF cover; (viewed December 2011), Includes bibliographical references (p. 25)
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
"This plan, the result of a partnership among the Departments of Transportation of Colorado, New Mexico, Oklahoma, and Texas, outlines a series of priorities and steps to improve the corridor and serves as a tool for securing funding for corridor development. Funding for this planning project was provided by the U.S. Department of Transportation with the Colorado Department of Transportation serving as project manager.", Study overview -- Table of contents and executive summary -- Chapter 1, Introduction -- Chapter 2, Development plan -- Chapter 3, Environmental considerations -- Chapter 4, Maintenance and operation plan -- Chapter 5, Benefit cost analysis -- Chapter 6, Finance plan -- Chapter 7, Risk assessment -- Public communications guide -- Appendix A -- Appendix B-1, Development plan, supporting technical analysis -- Appendix B-2, Environmental considerations, supporting technical analysis -- Appendix B-3, Maintenance & operation, supporting technical analysis -- Appendix B-4, Benefit cost, supporting technical analysis -- Appendix B-5, Finance plan, supporting technical analysis -- Appendix B-6, Risk assessment, supporting technical analysis -- Appendix B-7, Stakeholder involvement., Cover title.
