Route: I-5 [Seattle] MP 164 Flammable loads can not be transported through the tunnel under convention center when the sprinkler systems are not operational or being tested
Restricted Route, Class 3 - Flammable

Route: I-90 [Seattle] MP 3 - 6 Flammable loads can not be transported through the Mercer Island tunnel or the tunnel on the west side of Lake Washington when the sprinkler systems are not operational or being tested
Restricted Route, Class 3 - Flammable