[1] SH 127 begins in Sabinal at an intersection with US 90 and RM 187.

[2] The highway travels north through Sabinal along Center Street, concurrent with RM 187, before separating from that route and turning toward the northwest.

[3] The route crosses the Frio River at Concan before ending at a junction with US 83.

[4] The original SH 127 was designated on October 10, 1927[5][6] as a proposed route from Cotulla eastward through Tilden to Oakville.

This route was mostly restored starting on January 9, 1934 as SH 202.