Wikipedia:WikiProject Washington State Highways/Selected article/May 2008
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State Route 99, abbreviated SR 99, commonly called Highway 99, is a numbered state highway in the U.S. state of Washington extending just over 50 miles from Fife in the south to Everett in the north.
SR 99 originates at Interstate 5 in Fife, near its own intersection with 54th Avenue E. From there, it heads eastward to Federal Way and intersects SR 18 just west of its interchange with I-5. It then begins to travel north, through Des Moines, overlapping SR 509 for a few miles. The route becomes a little difficult to identify for several miles, as there are no reassurance signs until entering SeaTac. Once there, it becomes International Boulevard and forms the eastern boundary of the Seattle-Tacoma International Airport until crossing SR 518, where it becomes Pacific Highway South and becomes a suburban thoroughfare.
