Public Works Department


Welcome to the Benton County
Public Works Department  


Our Mission: The Benton County Public Works Department strives to provide the highest quality roadway and infrastructure to the public through prudent use of resources, technology, innovation, and teamwork.

Our Vision: Working for the community to establish and maintain an exceptional road and public works infrastructure system through dedicated staff, effective construction, rigorous maintenance, and exemplary service.

How Do I…?

…get permits

…report a road problem

…bid on county projects or proposals

...view the Benton County road map

…find standards and specifications

…find road closures

…find out about snow removal
...donate or dispose of household hazardous waste

* For information regarding what changes may be happening in your area, please scroll down to the News Section of this page.
 * For information regarding work being done by the County along the roads, please click on the Projects link on the sidebar. 

* For Temporary, Short and Long Term Road Closure information, please click on the Road Closures link on the sidebar

Tip of the Month: 
April is National Distracted Driving Awareness Month

Distracted Driving is any type of activity, other than driving, that you may be doing while driving.  This includes; talking on the phone (including hands free), changing the radio station or using your navigation system.  Then there is the most distracting of all, which is texting while driving.  You may be thinking, but I only use my phone or vehicle infotainment system at a stop light.  Did you know that it can take up to 30 seconds to become refocused on driving?

In Benton County, we have urban and rural areas and the traffic differs by area.  In the urban areas; you have commercial vehicles, passenger vehicles, motorcyclists, pedestrians and bicyclists to worry about.  Not to mention someone’s family dog or cat that has gotten out and is running down the road.  Or even a random squirrel that may be trying to cross the road.  In the rural areas; add in farm equipment, people riding horses, cows that may have escaped through a broken fence and larger wildlife such as skunks, deer or coyotes.

To help avoid distracted driving, program your navigation system or setup your radio before you start driving.  There are apps available for smart phones that can be setup to respond automatically to let others know that you are driving and will get back to them, without you having to touch your phone.  If you really need to take a call or send a text, the best thing to do is pull over in a safe spot before doing either.

For more information about National Distracted Driving Awareness Month, head over to the National Safety Council’s website by clicking here.

State Travel Information Websites

Before heading on a trip, check with the following agencies:
Washington State Department of Transportation (
Oregon Department of Transportation (
Idaho Department of Transportation (

*For your daily commute, check with your local news and city website(s) for concerns and construction projects. 



As of February 14, 2019, a restriction on through traffic will be placed on the following County Roads in the Finley Area.  It shall be unlawful for any truck to operate on these roadways except for the purpose of making local deliveries.  Signs are posted indicating the restriction areas. 

- Bowles Road from SR 397 to Haney Road
- Cochran Road from SR 397 to Haney Road
- Haney Road from SR 397 to Game Farm Road
- Finley Road from SR 397 to SR 397
- Nine Canyon Road from SR 397 to Game Farm Road.


On January 29, 2019, new reduced speed limits were approved for several roads in the Prosser and Finley areas.  Originally, these roads were unmarked country roads and their speed limit was 50 MPH.  Please see below for a list of the roads and their new speed limit.  The new reduced speed limits will be effective once the speed limit signs have been postedTo see a map of these roads, click the link below. 


Albro Road – 25 MPH
Bone Road – 25 MPH
County Line Road – 30 MPH 
Griffin Road – 35 MPH 
Johnson Road – 35 MPH 
King Tull Road – 35 MPH 
Sievers Road – 35 MPH 
Atwood Road – 40 MPH 
Missimer Road – 40 MPH 
Wilgus Road – 40 MPH 

Finley (map): 
Sloan Road – 35 MPH 
Sloan Court – 35 MPH 

In an effort to keep the citizens of Benton County informed, upcoming construction projects are posted on the County's Facebook page, you can also find information about closures and detours on the main Benton County website.
Contact Us

Physical Address

(1st floor of the Courthouse):

620 Market Street

Prosser, WA  99350


Mailing Address:

P. O. Box 1001

Prosser, WA  99350

Phone Numbers:

(509) 786-5611


(509) 736-3084

Email Address:


Benton County    620 Market Street    Prosser, Washington 99350
Phone: (509) 786-5710 or (509) 783-1310
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