(Olympia, WA)  --  State Route 99 in Washington will soon be named for a black Civil War veteran from the Evergreen State.  The Everett "Herald" reports the Washington State Transportation Commission has agreed to name S-R 99 after William P. Stewart of Snohomish, who fought in the 29th Colored Infantry during the Civil War.  The highway has been named for Confederate President Jefferson Davis since 1940, when markers were installed in Blaine and Vancouver by the United Daughters of the Confederacy.  Former state Representative Hans Dunshee of Snohomish began an effort in 2002 to have the highway renamed after Stewart.