SR 510 - Meridian Rd SE - Roundabout and Paving

Project news

  • Crews have opened a modern roundabout at the intersection of SR 510 and Meridian Road Southeast. 
  • This project also includes repaving SR 510 between Old Pacific Highway Southeast and Reservation Road Southeast. The paving will be done at night and will require one-way alternating traffic.
  • Advance information about construction is available at the Thurston County construction and travel updates webpage. 

Needs & Benefits

Safety is WSDOT’s number one priority. This intersection has been identified as a location with a history of collisions. A roundabout at this location offers the greatest safety benefit by reducing the potential for severe collisions, while improving connectivity along the corridor. Roundabouts move traffic through an intersection more efficiently and with less congestion.

Traffic approaching a roundabout yield rather than coming to a complete stop and waiting for a traffic signal. Other benefits include improved access onto Meridian Road Northeast and increased sight distance. 

How to use a roundabout:

  • Slow down before entering the roundabout.
  • Yield to traffic already in the roundabout. Wait for a gap and then enter the roundabout.
  • Use turn signals when exiting the roundabout.

New pavement will cut down on the cost of maintenance by reducing the risk of costly emergency work to fill potholes and repair cracks.


  • Construction: Winter 2019
  • Complete: Summer 2019


Financial Data for PIN 351033A
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $3,121
CWA $0
Total $3,121


Doug Adamson 
WSDOT Communications

Brian Whitehouse
WSDOT Project Engineer

Crews will build a new roundabout at the intersection of SR 510 and Meridian Road Southeast