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State Route 518 (Washington)
Encyclopedia
State Route 518 is a state highway in the U.S. state
of Washington. It extends just under 3.5 miles (5.6 km) from Burien
in the west to Tukwila
in the east.
, SR 518 runs east past Seattle-Tacoma International Airport
, just east of which is an interchange with State Route 99
(International Boulevard). It intersects with Interstate 5 just northwest of Westfield Southcenter
and continues eastward as Interstate 405
. It is a freeway its entire length.
A significant portion of Route 518's traffic is between the airport and the interstate.
The interchange between the SR 509 and SR 518 freeways currently is not a freeway to freeway junction. Traffic often backs up on the existing ramp from southbound SR 509 to get to SR 518. WSDOT has planned a project to improve the interchange by adding a flyover ramp to connect southbound SR 509 traffic to SR 518.
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
of Washington. It extends just under 3.5 miles (5.6 km) from Burien
Burien, Washington
Burien is a city in King County, Washington, United States, located south of Seattle. As of the 2010 Census, Burien's population is 33,313, which is a 2.9% increase since incorporation. Annexation in 2011 has increased the cities population to about 45,000....
in the west to Tukwila
Tukwila, Washington
Tukwila is a city in King County, Washington, United States. The northern edge of Tukwila borders the city of Seattle. The population was 19,107 at the 2010 census.-History:...
in the east.
Route description
Originating at State Route 509State Route 509 (Washington)
State Route 509 is a state highway in the U.S. state of Washington. It extends just over 35 miles from Tacoma in the south to Seattle in the north.-Route description:...
, SR 518 runs east past Seattle-Tacoma International Airport
Seattle-Tacoma International Airport
The Seattle–Tacoma International Airport , also known as Sea–Tac Airport or Sea–Tac , is an American airport located in SeaTac, Washington, at the intersections of State Routes 99 and 509 and 518, about west of Interstate 5...
, just east of which is an interchange with State Route 99
State Route 99 (Washington)
State Route 99, abbreviated SR 99, commonly called Highway 99, is a numbered state highway in the U.S. state of Washington extending just under from Fife in the south to Everett in the north, with a gap in Tukwila.-Southern division:...
(International Boulevard). It intersects with Interstate 5 just northwest of Westfield Southcenter
Westfield Southcenter
Westfield Southcenter, formerly known as Southcenter Mall, is a shopping mall located in Tukwila, Washington, USA. It is currently anchored by JC Penney, Macy's, Nordstrom, and Sears and owned by the Westfield Group. A Rainforest Cafe is also at the mall...
and continues eastward as Interstate 405
Interstate 405 (Washington)
Interstate 405 in Washington is a stretch of freeway that bypasses Seattle east of Lake Washington. The northern terminus is in Lynnwood and the southern terminus is in Tukwila...
. It is a freeway its entire length.
A significant portion of Route 518's traffic is between the airport and the interstate.
The interchange between the SR 509 and SR 518 freeways currently is not a freeway to freeway junction. Traffic often backs up on the existing ramp from southbound SR 509 to get to SR 518. WSDOT has planned a project to improve the interchange by adding a flyover ramp to connect southbound SR 509 traffic to SR 518.
Exit list
The entire route is in King County.| Location | Mile | Destinations | Notes |
|---|---|---|---|
| Burien Burien, Washington Burien is a city in King County, Washington, United States, located south of Seattle. As of the 2010 Census, Burien's population is 33,313, which is a 2.9% increase since incorporation. Annexation in 2011 has increased the cities population to about 45,000.... |
0.00 | Southwest 148th Street, 1st Avenue South – Burien | At-grade intersection At-grade intersection An at-grade intersection is a junction at which two or more transport axes cross at the same level .-Traffic management:With areas of high or fast traffic, an at-grade intersection normally requires a traffic control device such as a stop sign, traffic light or railway signal to manage conflicting... |
| 0.00 | |||
| 0.60 | Des Moines Memorial Drive | Westbound exit and eastbound entrance | |
| Seatac | |||
| 1.62 | Eastbound exit and westbound entrance | ||
| 1.87 | Sea-Tac Airport | ||
| 2.10 | Westbound exit and eastbound entrance | ||
| Tukwila Tukwila, Washington Tukwila is a city in King County, Washington, United States. The northern edge of Tukwila borders the city of Seattle. The population was 19,107 at the 2010 census.-History:... |
|||
| 3.12 | 51st Avenue South, Southcenter Parkway | Eastbound exit and westbound entrance | |
| 3.42 | Eastbound exit and westbound entrance | ||
| 3.42 | Eastbound exit and westbound entrance |