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Jackson School Road Interchange

Project Summary:
A $10.4 million project to rebuild the Jackson School Road interchange at U.S. 26 (Sunset Highway).
Construction Status and Timline:Work on this project is substantially complete.
Latest Information:
(November 2005)
All U.S. 26 off- and on-ramps are now open.  

Project Information
The long-sought after interchange on U.S. Highway 26 at Jackson School Road is complete.  
Prior to construction, the Oregon Department of Transportation completed the environmental review, an interchange area management plan and design for the new interchange after extensive public review. With the adoption of the Oregon Transportation Investment Act by the Oregon Legislature, funding for the project is made possible through the issuance of bonds to be repaid through increased vehicle registration and title fees.
The interchange was built in an area of valuable farmland in rural Washington County. It was designed to rural standards and includes access control within approximately one-quarter mile of the ramp connections with Jackson School Road. Frontage roads were used to access local properties, ensuring the safe operation of the interchange by minimizing conflicts with local traffic.  The interchange was built as a full diamond in order to preserve as much farmland as possible while ensuring safety.
Jackson School Road - before and after
 Before After
There is a significant crash history at the intersection over the past ten years. Traffic crossing the highway on Jackson School Road and left turns result in the most crashes. The highest crash movement is the crossing of the highway on Jackson School Road, with eight southbound and 12 northbound between 1996 and 2000.
Differences in travel time were considered as part of ODOT´s analysis. The elimination of most left turns and crossings is expected to add no more than five minutes to any trip currently using the intersection. 
  • Diagram of crash history for left turns from the Sunset Highway to Jackson School Road.
  • Diagram of crash history of traffic crossing the Sunset Highway.
  • Diagram of crash history of left turns  from Jackson School Road to the Sunset Highway.

OTIA Financing
The estimated $10.4 million in construction costs will come from the Oregon Transportation Investment Act (OTIA), from a total of $500 million in bonds financed by increased vehicle-title and other fees. Between 2002 and 2007 OTIA will fund 173 projects to pay for new highway construction, renovation and critical bridge work on state highways and state and local bridges. Combined with local matching funds, OTIA will pump an additional $646 million of highway and bridge construction into Oregon´s economy.

ODOT Staff Contacts
Steve Harry, ODOT Community Affairs Manager - 503-731-3490
Lili Gordon, ODOT Community Affairs Coordinator - 503-731-8247