20250710 11290700 1.0 TRUE Thurston_Roads The road data is a representation of the Thurston County's ground transportation network with a priority given to county owned right of ways. LAST UPDATED - 26 Oct 2017 BY KLB. All county road updates (changes, changes in ownership, new roads, removed roads ) are provided to Geodata from Public Works and an annual basis. Maintenance is done on a monthly basis on non-county roads or as they are received.