On December 17 , 1952 it was extended 10.7 miles ( 17.2 km ) south to SH 48 .
The north end became part of FM 732 ( which had its east end there ) .
On December 17 , 1952 it was extended 10.7 miles ( 17.2 km ) south to SH 48 , and the north end became part of FM 732 ( which had its east end there ) .