Engineering Division

The Engineering Division is responsible for the following activities:

  • Perform engineering, surveying, and design of City water, sewer, pavement, sidewalks and other projects as needed.
  •  Maintain records, create bid documents, project plans and maps of City Infrastructure.
  •  Review and approve private construction site plans for site grading, drainage, storm sewer, storm detention, sanitary sewer and water.
  •  Inspect work on City projects, private construction projects, and in the City Right-of-Way for compliance with City standards and specifications.

 

WOO-SR 25/SR 64 Pavement Rehabilitation (98929)

WOO-SR 25/SR 64 Pavement Rehabilitation Documents

 

Roundabout Information:

  • How are roundabouts safer?

Roundabouts are designed to be safer and more efficient than a traditional intersection.  The design of the roundabout creates a low speed (20-30 mph) environment and prevents high angle crashes such as “T-bone” crashes.  Low angle, low speed crashes tend to be less severe than higher angle, high speed crashes.  – Reference: ODOT

  • Are roundabouts really more efficient?

Yes. Vehicles are able to move more quickly through the intersection because of the “yield at entry” – drivers only have to watch for traffic from the left, and if there is an adequate gap available, they can enter the intersection without stopping.  Once in the roundabout, drivers have the right-of-way, so they will not have to stop or yield to exit.  If the driver does need to yield at entry to traffic inside the roundabout, their delays are brief and typically less than the time they would have been delayed at a traffic signal.   – Reference: ODOT

  • How does the design compensate for large vehicles such as semi trucks?

Incorporated into the design of roundabouts is something called a “truck apron.” The truck apron is the area between the central island and the roadway that is mountable by larger vehicles but not used by passenger vehicles.  Typically this area is concrete versus the roadway which is asphalt.  – Reference: ODOT

  • How much safer are roundabouts?

According to the U.S. Department of Transportation Federal Highway Administration, roundabouts reduce the types of crashes where people are seriously hurt or killed by 78-82% when compared to conventional stop-controlled and signalized intersections, per the AASHTO Highway Safety Manual.  – Reference: USDOT

Roundabout Information-USDOT video

 

Myth Busters – Roundabouts vs. 4 Way Stop