Road Department


Welcome to the
Benton County
Road Department!  

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

Our Mission: The Benton County Road 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.


Tip of the Month:
Driving on unpaved roads

Gravel roads present their own special road safety challenge. In Benton County, about 40% of our County-maintained roads are unpaved.  This does not include private roads, which are often unpaved, that are the responsibility of the owners.

Construction materials, weather, traffic volumes, and vehicle weights can change a gravel road's condition very quickly. That's why it's so important to approach gravel roads with caution each and every time you encounter one. It may not be the same road you traveled this morning.

1. Be prepared
Exercising caution and making some fairly simple preparations can make navigating an unpaved road less stressful (and safer). If it’s your first time traveling a route, don’t expect road signs to keep you on course. Refer to your map, directions, and/or GPS to make sure you’re going the right way. Check all your tires (including your spares) as well as your tire pressure before using an unpaved surface, and always make sure you have enough gas to get you to and from your destination. Consider taking extra water, food, and other supplies in case of an unexpected delay. Lastly, don’t count on cell service — for longer drives in less populated areas, always let someone know where you’re going and when they should expect you back.

2. Go slow
It’s hard to know how your vehicle will perform once you leave the relative comforts of a paved surface. Unpaved roads can run the gamut from well maintained and smooth to narrow, steep, and rocky. Accelerate and brake slowly to see how your car handles the shift in terrain and try to maintain a speed that’ll make it easy to stop for passing cars, people, wildlife, equipment, or any other potential hazards.

3. Watch out for curves and dips
Curves and dips in the road impact visibility, preventing you from seeing approaching cars or other hazards. Unfortunately, road conditions on unpaved surfaces are often at their worst in places where people brake the most (like blind curves and dips), making the task of negotiating them safely even more challenging. As you approach a curve or dip, slow down and stay to the right of the road (as long as you can safely do so). Minimize distractions (like a loud car radio) to make it easier to listen and watch for signs of oncoming traffic (a car’s engine or visible dust), and always maintain a speed that will allow you to stop easily if necessary.  On blind corners, or when you can’t tell if there are oncoming vehicles, you can honk your horn to alert others you are there.  Do not blare your horn continuously, and roll your window down, so you can hear if someone else is honking.

4. Look out for loose surfaces
Loose road surfaces can present a challenge to drivers whether you’re driving on gravel, sand, or dirt. In areas where the road surface is loose, reduce your speed, steer gently, and try to avoid sudden braking or accelerating whenever possible. Be mindful of your car’s clearance (those with a low undercarriage need to take special care negotiating rocky or uneven surfaces) and watch the weather — it doesn’t take much rainfall to turn a dirt road into a muddy swamp.

5. Increase following distance. 
Even if the visibility is good and the road is hard-packed, stay at least six seconds behind other vehicles. Increase this distance when conditions are less than perfect. This reduces the danger from a cloud of dust obscuring vision or flying rocks damaging headlights and windshields. Following too closely and being in a dust cloud can also hide your vehicle from others.


State Travel Information Websites:
For your daily commute, check with your local news and city website(s) for concerns and construction projects.
Before heading on a trip, check with the following agencies:

Washington State Department of Transportation (
Oregon Department of Transportation (
Idaho Department of Transportation (

News from the Road Department:


The Benton County Road Department bituminous surface treatment (BST), or "chip seal," project will begin again this Spring.
Please see the Benton County Twitter feed or Facebook page for more information.

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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