SR 432 Highway Improvements and Rail Realignment Study

SR 432 Rail Realignment & Highway Improvements Study

The SR 432 Highway Improvements and Rail Realignment Study is complete. For a copy of this and related documents, please visit: SR 432 Highway Improvements and Rail Realignment Study or contact CWCOG at 360-577-3041.

The SR 432 Highway Improvements and Rail Realignment Study was completed in the fall of 2014. It identified various project concepts to address safety, traffic congestion, system mobility and freight capacity issues where the rail and roadway systems overlap along the SR 432 industrial corridor. Once constructed, these improvements will improve safety and facilitate regional economic development by keeping freight, employees, residents, and tourists moving through the corridor.

In 1988, the Lower Columbia ports requested that the U.S. Army Corps of Engineers study the deepening of the Columbia River shipping channel to help the region become competitive in the global marketplace. The river deepening increased interest in moving freight through the region, leading to further study of the road and rail systems that connect to the Columbia River and the Port of Longview in order to handle increasing volumes of freight.

Project Partners

The following jurisdictions partnered on the SR 432 Concept Development Study:

  • Cowlitz-Wahkiakum Council of Governments (CWCOG)
  • City of Kelso
  • City of Longview
  • Cowlitz County
  • Cowlitz Economic Development Council (CEDC)
  • Port of Longview
  • Washington State Department of Transportation (WSDOT)

The CWCOG led this partnership while working closely with WSDOT, the Federal Highway Administration, other regulatory agencies, BNSF Railway, and the public.

Various design concepts were developed and evaluated for rail and highway improvements throughout the SR 432 corridor to improve safety, mobility, congestion, and freight capacity. The top concept that emerged from this study was a Grade Separated Intersection at SR 432/SR 433. Cowlitz County is the lead agency for the engineering phase of this project.