Research for the AASHTO Committee on Environment and Sustainability. Task 54. Evaluate Colorado's Area-wide Cumulative Effects Assessment (ACEA) Methodology as a Mechanism for Cumulative Impacts Analysis of Regional Transportation Plans

Departments of Transportation (DOTs) are confronted with the challenge of performing meaningful and efficient environmental analysis, acceptable to the resource agencies involved, so that environmental information can inform and support decision-making at appropriate points in the transportation process. Colorado has made an initial attempt to address this challenge in its Area-wide Cumulative Effects Assessment (ACEA). The ACEA evaluated the technical feasibility of conducting a meaningful cumulative impacts analysis on a regional scale for multiple major transportation corridor projects in the long-range transportation plan. NCHRP 25-25/Task 54 builds on the lessons learned in the ACEA to develop an alternative and flexible approach for conducting a region-wide cumulative effects analysis appropriate for natural and cultural resources. The final report is available at:


  • English


  • Status: Completed
  • Funding: $100000
  • Contract Numbers:

    Project 25-25, Task 54

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001
  • Performing Organizations:

    ICF Consulting, Inc.

  • Principal Investigators:

    Paulsen, Chris

  • Start Date: 20080707
  • Expected Completion Date: 20090930
  • Actual Completion Date: 20090930

Subject/Index Terms

Filing Info

  • Accession Number: 01673593
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 25-25, Task 54
  • Files: TRB, RiP
  • Created Date: Jun 25 2018 3:03PM