 At Carroll it intersects US 71 on the western side of the city . Continuing east , the highway goes through the town of Glidden and passes to the north of Ralston , west of the Greene County line . North of Scranton it meets the northern end of Iowa 25 . Between Scranton and Jefferson , US 30 crosses the Raccoon River . US 30 crosses Iowa 4 and Iowa 144 on the northern edge of Jefferson and Grand Junction , the latter of the cities named for its location at the junction of the historic Chicago & Northwestern and Chicago , Rock Island and Pacific Railroads , now both owned by Union Pacific , respectively . East of Grand Junction , the highway passes over the Overland Route where it stays south of the railroad until Le Grand . 
