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Traffic/Road Engineering

We use traffic crash data and traffic counts to improve safety and efficiency of our roads. We also maintain Intelligent Transportation Systems (ITS), signs, and pavement markings. We provide design and review services for capital projects throughout Washington County. Engineering staff reviews all road improvement construction plans for work in County rights-of-way.

Most of our services are available remotely - online, by phone or via U.S. Mail - 24 hours/day, seven days a week. In-person Services: Appointments required at the Walnut Street Center. See Office Locations and Business Hours.

'Cut-through' traffic: Solutions for neighborhoods

Cut-through Traffic

Whether it’s to avoid an out-of-the-way detour or traffic on busy roads, drivers sometimes take shortcuts through residential neighborhoods. This “cut-through traffic” can cause problems for those who live on these streets.

Neighborhood streets typically have narrower lanes than major roads and often include on-street parking. Cut-through traffic can result in congestion and speeding on these streets, creating both safety and quality-of-life issues for residents.

But while speeding is certainly against the law, cut-through traffic is not. Most roadways in Washington County neighborhoods are public streets and the public is allowed to drive on them. Washington County cannot prevent people driving on public roads.

Our Neighborhood Streets Program provides traffic-calming measures on streets in unincorporated Washington County that are classified as local, neighborhood routes or that meet “residential collector” criteria. See Road Classifications(Link downloads document) to learn more. Recommended safety measures may include:

  • A temporary speed radar trailer
  • Neighborhood Speed Watch/Dear Motorists program
  • Lawn signs
  • Pavement markings
  • Neighborhood newsletter
  • Increased patrol by the Washington County Sheriff’s Office.

For more information about our Neighborhood Streets Program, visit:

Request a Road Service
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Report potholes, overgrown vegetation, damaged signs, streetlight and traffic signal issues and other road and traffic-related concerns.

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As Builts
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See drawings of record from road projects and developments in Washington County.

See As Builts

Road Design & Construction Standards
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View technical engineering design and construction requirements for public improvements.

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