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State Route 99

I-5 South - Exit 149

Exit 149

1 sign

WA-99 South - SeaTac

SeaTac

2 signs

SeaTac Airport Arrivals Road At Airport Expressway

Seattle-Tacoma International Airport

3 signs

End I-90 West at Martinez Drive Interchange

4th St./Martinez St.

3 signs

WA-99 South Approaching Toll Tunnel

South Lake Union

3 signs

End US-2 West at I-5

I-5 - Exit 194

3 signs