It begins at the Texas state line, serving as a continuation of Texas State Highway 152, and continues east to end at I-344 (John Kilpatrick Turnpike) in southwest Oklahoma City, a length of 145 miles (233 km).Along its route it serves three county seats: Sayre, Cordell, and Oklahoma City (which is also the state capital).SH-41 was extended east to Oklahoma City around 1934 and west to the Texas state line around 1938.(Located at this intersection is an abandoned Apco station, which was used in a scene from the movie "Rain Man").[7] On March 5, 1979, the eastern terminus was pushed back a half-mile west, to the intersection of Interstate 44 and S.W.[6] On February 2, 2004, SH-152 was removed from Newcastle Boulevard and placed on the newly extended Airport Road freeway.It heads west along Orient Avenue through town, until it reaches Rambo Street.SH-42 was first added to the state highway system on July 20, 1939, at which time it had been graded, but not yet surfaced.