State Route 397

Washington State Route 397

Extending through Benton and Franklin Counties in the Tri-Cities region, Washington State Route 397 runs 22 miles between I-82 south of Kennewick and the systems interchange with I-182/U.S. 395 in Pasco. SR 397 serves as a truck route for the industrial areas of Kennewick and Pasco.

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Page Updated Sunday June 22, 2025.