Washington State Route 518
- Washington State Route 518
infobox WA State Route
type=WA
route=518
sec=715
parent=5
parent_type=Interstate
length_mi=3.42
length_ref=
length_round=2
formed=1964
dir1=West
dir2=East
from=
junction=
to=
previous_type=WA
previous_route=516
next_type=WA
next_route=519
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.
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.fact|date=July 2008
Exit list
The entire route is in King County.
References
External links
* [http://www.angelfire.com/wa2/hwysofwastate/sr518.html Highways of Washington State]
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2010.
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