Benton County Road Department Locations
Engineering and Administration
Courthouse
620 Market Street
PO Box 1001
Prosser, Washington 99350
Telephone: Prosser 509-786-5611
Tri-Cities 509-736-3084
Prosser Road Maintenance Shop
14303 N Hinzerling Road
Prosser, Washington 99350
Telephone: 509-786-5611
Kennewick Road Maintenance Shop
102808 Wiser Parkway
Kennewick, Washington 99338
Telephone: 509-786-5611
NOTE: Please contact our office immediately if you notice potholes, debris, dead animals, or any other obstruction on any County road, or if you notice any signs missing or knocked down. Call 786-5611 or 786-4810 in Prosser or 736-3084 or 222-2305 in Tri-Cities. After Hours and weekends, call non-emergency dispatch at 509-628-0333. Or email publicworks@co.benton.wa.us
Staff Contacts
Matt Rasmussen, PE
County Engineer
Robert Blain
Assistant County Engineer
Grant DeJongh
Public Works Program Coordinator
Road Department
General email account