Once on the eastern end of the tunnel , the highway follows a viaduct built along the side of Haiku Valley until the Kaneohe Interchange with state route 63 ( Likelike Highway ) which leads into the town of Kaneohe . Once on the eastern end of the tunnel , the freeway follows a viaduct built along the side of Haiku Valley until the Kaneohe Interchange with State Route 63 ( Likelike Highway ) which leads into the town of Kaneohe .