Skip to main content

Washington State Route 599



Washington State Route 599 is a 1.75-mile freeway entirely contained within the City of Tukwila located in King County.  WA 599 is a north/south route connecting I-5 to WA 99 and is former alignment of US Route 99.

This blog is part of the larger Gribblenation US Route 99 Page.  For more information pertaining to the other various segments of US Route 99 and it's three-digit child routes check out the link the below.



Washington State Route 599

There isn't much to WA 599 as a route but there are some neat signs like this WA 599 "Begin."


The Light Rail from SeaTac International Airport crosses above WA 599 near Marginal Way.


There are only two exits on WA 599; the first is at Interurban Avenue while the second is at Tukwila International Boulevard.  Tukwila International Boulevard is another former alignment of US 99 which predated the freeway WA 599 runs on now.


North of Tukwila International Boulevard the route becomes WA 99 and WA 599 ends.  There is a much better sign assembly explaining the change south of this one, but I wasn't expecting it and missed the photo.


Interestingly there is a gap in WA 99 from WA 518 north to the terminus of WA 599 which is spanned but Tukwila International Boulevard.   The routing of what is now WA 599 was constructed in the late 1950s and was part of Primary State Highway 1 WM (West Marginal).  When the route had been completed US 99 switched alignments apparently onto a multiplex of I-5 and may have been once been signed as US 99T.  The route has been designated at WA 599 since 1971.  This older map of the state highway system from 1956 shows how US 99 used to flow through from Tacoma through Seattle before the construction of I-5.

1956 Washington State Highway Map

Edit 5/13/18:  I was shown a 1970 map scan of downtown Seattle by Flickr user Arthur Allen showing the routing of WA 599 shown as WA 99T.  The map scan can be viewed here at the following link:

Arthur Allen Flickr Page showing a 1970 Map Scan of downtown Seattle

Comments

Popular posts from this blog

Sunshine Bridge (Donaldsonville, LA)

Located about halfway between Baton Rouge and New Orleans in southern Louisiana, the Sunshine Bridge spans the lower Mississippi River near the city of Donaldsonville as part of the longer Louisiana Highway 70 corridor, which connects Interstate 10 and Airline Highway (US 61) with US 90 in Morgan City. In the years following World War II, the only bridges across the lower Mississippi River in Louisiana were located in the area of the state’s two largest cities – Baton Rouge and New Orleans. Postwar agricultural and industrial development along the river in this region led to the planning of a series of infrastructure projects in southern Louisiana that were aimed at spurring this development and modernization of the Delta region. One of these projects was known as the Acadian Thruway and was developed in the 1950s as a toll road intended to connect greater New Orleans with Lafayette and points west while providing a high-speed bypass of the Baton Rouge metro area. The Thruway, which

Old River Lock & Control Structure (Lettsworth, LA)

  The Old River Control Structure (ORCS) and its connecting satellite facilities combine to form one of the most impressive flood control complexes in North America. Located along the west bank of the Mississippi River near the confluence with the Red River and Atchafalaya River nearby, this structure system was fundamentally made possible by the Flood Control Act of 1928 that was passed by the United States Congress in the aftermath of the Great Mississippi River Flood of 1927 however a second, less obvious motivation influenced the construction here. The Mississippi River’s channel has gradually elongated and meandered in the area over the centuries, creating new oxbows and sandbars that made navigation of the river challenging and time-consuming through the steamboat era of the 1800s. This treacherous area of the river known as “Turnbull’s Bend” was where the mouth of the Red River was located that the upriver end of the bend and the Atchafalaya River, then effectively an outflow

Huey P. Long Bridge (Baton Rouge, LA)

The decade of the 1930s brought unprecedented growth and development to Louisiana’s transportation infrastructure as the cities of New Orleans and Baton Rouge cemented their place as leading urban centers on the Gulf Coast. In the immediate aftermath of the success garnered by the construction of the massive bridge on the Mississippi River near New Orleans in 1935, planning and construction commenced on the state’s second bridge over the great river. This new bridge, located on the north side of Baton Rouge, was to be similar in design and form to its downriver predecessor. Completed in 1940 as the second bridge across the Mississippi River in Louisiana and the first to be built in the Baton Rouge area, this bridge is one of two bridges on the Mississippi named for Huey P. Long, a Louisiana politician who served as the 40th Governor of the State from 1928 to 1932, then as U.S. Senator from 1932 until his death by assassination at the state capitol in Baton Rouge on September 10, 1935