Transportation Data, GIS & Modeling

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Drawings for new interchange locations are only available through the WSDOT Interchange Viewer Web App.

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Interchange Viewer

SR 18

 

The following drawings are ordered by milepost (MP) for the state route (SR) and are in .pdf format:

 

Drawings for SR 18
  MP 0 - Weyerhaeuser Way S
  MP 2 - SR 167/West Valley Highway
  MP 3 - C St SW
  MP 4 - SR 164/Auburn Way
  MP 6 - Auburn-Black Diamond Rd
  MP 8 - SE 304th St
  MP 11 - SR 516
  MP 13 - SE 256th St
  MP 15 - SR 169/SE 231st St
  MP 18 - 244th Ave SE
  MP 20 - Issaquah-Hobart Rd/276th Ave

 

 

The following drawing includes the State Route that you have selected, but is referenced under
a different state highway:

Additional Drawings Associated with SR 18
  SR 5/Exit 142 - SR 18
  SR 90/Exit 25 - SR 18/Echo Glen