 State Route 516 ( SR 516 ) is a 16 @.@ 49 @-@ mile @-@ long ( 26 @.@ 54 km ) state highway in the U.S. state of Washington , serving communities in southern King County . The highway travels east as the Kent @-@ Des Moines Road and the Kent @-@ Kangley Road from a concurrency with SR 509 in Des Moines through Kent and Covington to an intersection with SR 169 in Maple Valley . SR 516 , designated as part of the National Highway System within Kent , intersects three major freeways in the area : Interstate 5 ( I @-@ 5 ) in western Kent , SR 167 in downtown Kent , and SR 18 in Covington . The roadway , built in the 1890s , was codified in 1937 as Secondary State Highway 1K ( SSH 1K ) from Des Moines to Kent and SSH 5A from Kent to Maple Valley . The two highways were combined during the 1964 highway renumbering to form SR 516 on its current route . 
