 On October 30 of that same year, a spur route of former State Highway 227 was designated as an extension of SH 118 causing the road to terminate at SH 227.This extension followed the easternmost path of present-day FM 170 to its terminus, and then down the southernmost stretch of the present SH 118 and the westernmost portion of the current park road ending at the intersection of what is now the Old Maverick Road within the present Big Bend National Park.On May 29, 1941, the state canceled the designation of SH 118 from Alpine to SH 227 with the Terlingua Spur between Terlingua and SH 227 receiving the designation of State Spur 121 and the portion between Terlingua and Alpine reverting to county jurisdiction.