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This article is within the scope of the U.S. Roads WikiProject, an attempt to build a comprehensive and detailed guide to state highways and other major roads in the United States. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion.U.S. RoadsWikipedia:WikiProject U.S. RoadsTemplate:WikiProject U.S. RoadsU.S. road transport
The sentence "The two highways were combined during the 1964 highway renumbering to form SR 516 and codified in 1970,[1][25] traveling east from SR 509 in Des Moines through I-5 at Midway, SR 167 in Kent, and SR 18 in Covington to SR 169 in Maple Valley" is long and needs to be split.