Maintaining project consistency with transportation plans throughout the project life cycle with an emphasis on maintaining air quality conformity: technical report.
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2016-07-01
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Edition:Technical Report: September 2012-March 2014
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Abstract:Federal and state transportation planning statutory and regulatory laws require transportation projects to be
consistent with transportation plans and improvement programs before a federal action can be taken on a
project requiring one. Significant delays in project delivery can occur if the federal funding is withheld when
projects are found to be inconsistent with transportation plans and improvement programs. This issue is
especially critical for projects in nonattainment and maintenance areas because an inconsistent project might
trigger a conformity failure or delayed determination for the entire plan and/or program.
The researchers found that the main challenges leading to project inconsistencies are insufficient
communication over the changes to projects’ design concept and scope, cost, and estimated letting date. The
research team developed a Project Consistency Guidebook (PCG), a Supplementary Information Document
(SID), and a project consistency checklist. The guidebook explains how project planning and development
interact with the regional and project level air quality conformity process, and details procedures and tools
that TxDOT and Texas Metropolitan Planning Organizations can use to understand and maintain project
level conformity and project consistency with applicable transportation plans and programs. The SID
provides an overview of the subjects relevant to project consistency. The project consistency checklist serves
as a guide to keep track of the changes to a project.
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