▁( l ater ▁became ▁part ▁of ▁FM ▁ 2 4 7 8 , ▁but ▁this ▁section ▁was ▁given ▁to ▁the ▁city ▁in ▁ 1 9 8 8 ; ▁FM ▁ 2 4 4 8 ▁was ▁re ass igned ▁to ▁another ▁route ) ▁north ▁from ▁Beth any ▁to ▁SH ▁ 1 2 1 . ▁FM ▁ 2 1 7 0 ▁was ▁re - rout ed ▁again ▁on ▁October ▁ 3 1 , ▁ 1 9 5 8 , ▁with ▁part ▁of ▁FM ▁ 2 1 7 0 ▁absor bing ▁a ▁section ▁of ▁FM ▁ 2 5 5 1 ▁with ▁part ▁of ▁the ▁old ▁FM ▁ 2 1 7 0 ▁becoming ▁a ▁part ▁of ▁FM ▁ 1 3 7 8 . ▁The ▁highway ▁was ▁extended ▁ ▁to ▁FM ▁ 2 4 7 8 ▁on ▁June ▁ 2 8 , ▁ 1 9 6 3 . ▁The ▁entire ▁highway ▁was ▁internally ▁re - design ated ▁as ▁Urban ▁Road ▁ 2 1 7 0 ▁by ▁T x D OT ▁on ▁June ▁ 2 7 , ▁ 1 9 9 5 . ▁On ▁August ▁ 2 8 , ▁ 1 9 9 7 , ▁the ▁section ▁west ▁of ▁SH ▁ 5 ▁was ▁given ▁to ▁the ▁city ▁of ▁Allen . ▁On ▁September ▁ 3 0 , ▁ 2 0 0 4 , ▁the ▁section ▁west ▁of ▁FM ▁ 2 5 5 1 ▁as ▁given ▁to ▁the ▁city ▁of ▁Allen . ▁On ▁November ▁ 1 5 , ▁ 2 0 1 8 ▁U R ▁ 2 1 7 0 ▁was