| Route information | ||||
|---|---|---|---|---|
| Length | 3.42 mi (5.50 km) | |||
| Existed | 1964–present | |||
| Major junctions | ||||
| West end | ||||
| East end | ||||
| Location | ||||
| Country | United States | |||
| State | Washington | |||
| Counties | King | |||
| Highway system | ||||
| ||||
State Route 518 (SR 518) is a 3.42-mile-long (5.50 km) highway in King County in the U.S. state of Washington. The highway goes from Burien at SR 509 to I-5 and I-405 in Tukwila.
The highway goes next to Seattle–Tacoma International Airport, giving people an easy way to get to and leave the airport.