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| SR 518 begins at the South 148th Street parclo interchange with the SR 509 freeway near downtown Burien. SR 509 joins Burien with Des Moines and Normandy Park to the south and Seattle to the north. 08/30/06 |
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| A loop ramp shuttles drivers onto SR 509 north to Boulevard Park and the Duwamish industrial area of Seattle. SR 518 commences on its own freeway east to Seattle-Tacoma International Airport and Interstates 5 & 405 at Tukwila. 08/30/06 |
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| Leaving SR 509, motorists see the first eastbound shield of SR 518 and quickly enter the city of SeaTac. 08/29/06 |
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| One half mile west of the South 154th Street half diamond interchange on SR 518 east. 154th Street, the original alignment of SR 518, provides access to Pacific Highway / Tukwila International Boulevard (former SR 99) at Riverton Heights. 08/29/06 |
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| A second runway lighting trestle passes high above SR 518 near the half diamond interchange with Des Moines Way. 08/29/06 |
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| South 154th Street straddles the northern perimeter of Seattle-Tacoma International Airport between Five Corners in Burien and 24th Avenue South at SR 518. A directional interchange with North Entry and North Exit Drive, the freeway between the Airport Terminal and SR 518, follows. 08/29/06 |
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| North Entry Drive heads south to the Seattle-Tacoma International Airport with an off-ramp to South 170th Street between SR 518 and the terminal. The entire freeway was redesigned to accommodate an elevated transit line. 08/29/06 |
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| SR 518 enters the city of Tukwila. and lowers to meet 51st Avenue South and Interstates 5 and 405. 08/29/06 |
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| A half diamond interchange joins SR 518 with 51st Avenue South ahead Interstate 5. 51st Avenue South transitions to Klickitat Drive en route to Southcenter Parkway at Southcenter Mall, east of Interstate 5. 08/29/06 |
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| SR 518 becomes Interstate 405 north within the directional cloverleaf interchange of Interstate 5. A left side ramp connects eastbound with Interstate 5 north to Seattle. 08/29/06 |
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| The southbound ramp to Interstate 5 departs almost immediately after wards for Kent, Federal Way, and Tacoma. 08/29/06 |
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| Interstate 405 south becomes SR 518 west at the directional cloverleaf interchange with Interstate 5. A loop ramp carries drivers onto Interstate 5 south for Federal Way, Tacoma, and Portland. 08/29/06 |
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| SR 518 ascends from Tukwila to SeaTac and Seattle-Tacoma International Airport. A distributor roadway leaves in one half mile for Pacific Highway / Tukwila International Boulevard (former SR 99) and North Entry Drive to the airport. 08/30/06 |
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| SR 518 provides the main access point to Seattle-Tacoma International Airport from Interstate 5 and the Seattle freeway network. Two lanes depart the westbound freeway for North Entry Drive, a short freeway leading to South 170th Street and the terminal. 08/30/06 |
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| A separate ramp departs the Airport exit first for South 154th Street and Pacific Highway. Pacific Highway was a part of SR 99 until 2004. South 154th Street represents the original alignment of SR 518. 08/29/06 |
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| Westbound at the ramp split for Pacific Highway, South 154th Street, and North Entry Drive south. 08/30/06 |
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| Continuing west, SR 518 approaches the Des Moines Memorial Drive half diamond interchange and two runway lighting trestles. 08/30/06 |
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| Des Moines Memorial Drive winds north from SR 518 to Boulevard Park and south to Five Points in the city of Burien. 08/30/06 |
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| The SR 518 freeway ends in one half mile at South 148th Street near the Burien city center. 08/30/06 |
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| Departing the freeway next is the northbound ramp to the SR 509 freeway. SR 509 ventures north from Burien to the Duwamish industrial area of Seattle. 08/30/06 |
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| A parclo interchange facilitates the movements between the SR 518 and 509 freeways. Traffic signals lie at both ends of the interchange. 08/30/06 |
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| SR 518 ends at SR 509, a north-south freeway from Des Moines to SR 99 (West Marginal Way) near South Park in Seattle. SR 509 and 99 provide a direct route to the Seattle City Center from here. 08/30/06 |
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| Heading south, SR 509 skirts the west side of Seattle-Tacoma International Airport to Des Moines Memorial Drive and South 188th Street. A planned extension of the freeway will realign the route on a southeasterly course to Interstate 5 and SR 516 in Kent. 08/30/06 |
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| South 148th Street stems west from SR 509 and 518 to the commercialized intersection with 1st Avenue South. 1st Avenue South is old SR 509. 08/30/06 |
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| 1st Avenue South travels north-south to Beverly Park and Sunnydale from near the Burien city center. 148th Street continues west to 16th Avenue SW near the Seahurst neighborhood of the city. 08/30/06 |
Page Updated 10-26-2010.
