 The present @-@ day FM 1957 was defined in 1954 . The original routing was along Culebra Road from its intersection with Grissom Road ( FM 471 ) to Potranco Road , which it followed to the Medina County line , a distance of 13 @.@ 8 miles ( 22 @.@ 2 km ) . The highway gained a 0 @.@ 1 @-@ mile ( 0 @.@ 16 km ) spur connection to Loop 13 ( present @-@ day I @-@ 410 ) in 1956 . The following year , FM 1957 was extended to its present western terminus , at FM 471 near Rio Medina . This added 5 @.@ 3 miles ( 8 @.@ 5 km ) to the highway . In 1988 , the entire routing along Culebra Road was transferred to the newly created FM 3487 . The Texas Department of Transportation ( TxDOT ) started defining urban roads in 1995 , at which time the segment of FM 1957 east of Loop 1604 , measuring 5 @.@ 4 miles ( 8 @.@ 7 km ) , was transferred to the newly defined UR 1957 . Despite the change in legal definition , UR 1957 continues to be signed as FM 1957 . FM 3487 was removed from the state highway system on December 18 , 2014 . 
