Washington State Route 518
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| State Route 518 Auxiliary route of .svg){kind=small} I-5 |
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| Defined by RCW 47.17.715, maintained by WSDOT | |||||||||||||
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| Length: | 3.42 mi[1] (5.50 km) | ||||||||||||
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| Formed: | 1964 | ||||||||||||
| West end: |  SR 509 in Burien |
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| Major junctions: |
 SR 99 in Seatac |
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| East end: |   I-5/I-405 in Tukwila |
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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.
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[edit] Route description
Originating at State Route 509, 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.[citation needed]
[edit] Exit list
The entire route is in King County.
| Location | Mile[1] | Destinations | Notes |
|---|---|---|---|
| Burien | 0.00 | Southwest 148th Street, 1st Avenue South – Burien | At-grade intersection |
| 0.00 | SR 509 – Des Moines, Seattle |
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| 0.60 | Des Moines Memorial Drive | Westbound exit and eastbound entrance | |
| Seatac | |||
| 1.62 | To SR 99 / South 154th Street |
Eastbound exit and westbound entrance | |
| 1.87 | Sea-Tac Airport | ||
| 2.10 | SR 99 |
Westbound exit and eastbound entrance | |
| Tukwila | |||
| 3.12 | 51st Avenue South, Southcenter Parkway | Eastbound exit and westbound entrance | |
| 3.42 | I-5 – Tacoma, Seattle |
Eastbound exit and westbound entrance | |
| 3.42 | .svg){kind=small} I-405 north – Renton, Bellevue |
Eastbound exit and westbound entrance |
[edit] References
[edit] External links
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| SR 500 - SR 501 - SR 502 - SR 503 (Spur) - SR 504 (Spur) - SR 505 - SR 506 - SR 507 - SR 508 - SR 509 - SR 510 - SR 512 - SR 513 - SR 515 - SR 516 - SR 518 - SR 519 - SR 520 - SR 522 - SR 523 - SR 524 (Spur: Edmonds, Lynnwood) - SR 525 (Spur) - SR 526 - SR 527 - SR 528 - SR 529 (Spur) - SR 530 - SR 531 - SR 532 - SR 534 - SR 536 - SR 538 - SR 539 - SR 542 - SR 543 - SR 544 - SR 546 - SR 547 - SR 548 - SR 599 | |
| Former or proposed state routes: SR 514 - SR 537 - SR 540 | |
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