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 along the roads, please click on the Projects link. 

For a list of road closure information, please click on the Road Closures link on the sidebar. 
There is also a map is available by clicking on the picture below. 
Road Closure Map

 Tip of the Month: Wet Weather Driving

It’s finally March, and while we have seen some snow early this month, it should start warming up soon.  Hopefully!  At least that’s what I saw on the weather forecast.  Warmer weather, blue skies and spring flowers here we come!

With spring on its way, we still have wet conditions on the roads to deal with.  All the snow is going to melt, and of course there are the famous spring showers.  Here are some tips on what to do and how to prepare yourself for wet weather driving.

Tires:  Check the tread depth on your tires.  A simple way is the penny test.  Insert a penny into the groove of your tire’s tread with Lincoln’s head upside down and facing you.  If you can see all of Lincoln’s head, it’s time to replace your tires. 

Headlights:  Turn your headlights on anytime your vision is hindered.  Especially, if it’s foggy or rainy out.  This not only makes it easier for you to see but also helps others see you.

Wet Roads and Hydroplaning:  If the roadway is wet, it may be slick due to oil that has saturated the roads and is brought back up to the surface.  Make sure you don't use cruise control, avoid puddles and standing water.  Also, no sharp turns, hard braking and reduce your speed.  All these things may cause you to hydroplane.

Finally, remember; Be Prepared, Stay Alert and Be Safe!

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.


There will be an upcoming road closure on Hanks Road between McDonald Road and Rothrock Road for the above referenced project. This Monday the 18th, M&M Excavating will move their equipment in and begin construction on Tuesday the 19th. They will be trenching across the roadway and installing a new culvert pipe among other items of work. The contractor will be closing the road Wednesday the 20th and Thursday the 21st to install the new culvert. It will again be closed the following Monday the 25th to allow for paving. A minimum of lane of traffic will remain open at all other times.

Click here to see the vicinity/detour map showing the project location as well as the proposed detour route.


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.


New reduced speed limits have been 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 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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