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U.S. 26: Access to Springwater Community Interchange Area Management Plan
Project Overview

In 2009-2011, the Oregon Department of Transportation, City of Gresham, City of Damascus, Clackamas County and Multnomah County worked together to develop an Interchange Area Management Plan (IAMP) for U.S. 26 in the Springwater community. In 2011, both the City of Gresham and the Oregon Transportation Commission approved the IAMP.

The purpose of developing the IAMP was to address existing and future safety needs, improve access to the existing transportation system, and provide for a future transportation network that will efficiently and cost effectively accommodate the planned development in the Springwater area, while preserving the function of U.S. 26.

Preliminary planning and design of an interim project that will make improvements at the U.S. 26 intersections of SE 267th Avenue and SE Stone Road is now under way. More information.

Interchange Area Management Plan

Click on the links below to review the plan documents: 
US 26: Access to the Springwater Community Interchange Area Management Plan (PDF)

Appendix A - Environmental Criteria Review of IAMP Scenarios

Appendix B - Springwater IAMP Evaluation Matrix (PDF)

Appendix C - Alternatives Analysis (PDF)

Appendix C2 - Springwater IAMP Alternative A (PDF)

Appendix C3 - Springwater IAMP Alternative B (PDF) 

Appendix C4 - Implications of Locating the Springwater Interchange at Stone Road (PDF)

Appendix D - Springwater Management Area: Existing and Planned Zoning (PDF) 

Appendix E - IAMP Existing Conditions Technical Report (PDF)

Appendix F - Traffic Analysis of Selected Alternative (PDF) 

Appendix G - Review of Plans and Policies (PDF)

Appendix H - Findings (PDF) 

Appendix I - Public and Stakeholder Involvement (PDF)

Appendix J - Local Ordinance (forthcoming) (PDF)  

Project Background

The City of Gresham prepared the Springwater Community Plan and Springwater Transportation System Plan in 2005 to address development and transportation needs in the Springwater area. In these plans, the City of Gresham recommended a new interchange with U.S. 26 and also proposed enhancements to the local street network. The figure below shows the proposed location of the new interchange and the proposed alignment of new roads: 

If you would like to view a larger (pdf) version of the graphic above, please click here. 

The first step in designing a new interchange with U.S. 26 and improving the local street network was developing the Springwater Interchange Area Management Plan (IAMP). This joint ODOT and local government effort resulted in a long-range transportation and land-use plan for the Springwater interchange area.

The plan is long-term (20+ years) and addresses transportation and land uses within the interchange area. An IAMP is an important tool in protecting the public’s infrastructure investment and supporting the local street network. The IAMP development process evaluated multiple interchange design concepts and recommended one interchange design concept for further engineering design. 
Click on the link below for more information on the City of Gresham's Springwater Community Plan:


Public Involvement

ODOT and the City of Gresham hosted the first Interested Parties meeting for the Springwater IAMP in February 2009, at Hogan Cedars Elementary. The goal of the first meeting was to obtain feedback from participants about any issues or concerns about the alternatives and also to obtain feedback on the process for evaluating the alternatives. Below is a summary of the meeting and the meeting presentation: 

In spring 2010, ODOT and the City of Gresham met with various community stakeholders to gain input about the alternatives that had been developed. This input helped to further refine the alternatives.
In early March 2011, the IAMP was made available electronically for a final review period before the Oregon Transportation Commission approved it April 2011.


Project Documents and Maps
Below are links to various project documents and maps:
Study Area Map 
Alternatives Considered but Dismissed 
Current Alternatives: Alternative AAlternative BAlternative C2 
Alternatives Screening 
Alternatives Evaluation