▁I - 4 0 ▁in ▁North ▁Little ▁Rock , ▁Ark ansas . ▁The ▁highway ▁par alle ls ▁U . S . ▁Route ▁ 6 7 ▁( US   6 7 ) ▁except ▁for ▁the ▁portion ▁west ▁of ▁dow nt own ▁Dallas ▁( which ▁was ▁once ▁part ▁of ▁I - 2 0 ). ▁Between ▁the ▁term ini , ▁I - 3 0 ▁has ▁inter changes ▁with ▁I - 3 5 W , ▁I - 3 5 E ▁and ▁I - 4 5 . ▁I - 3 0 ▁is ▁known ▁as ▁the ▁Tom ▁Land ry ▁Fre ew ay ▁between ▁I - 3 5 W ▁and ▁I - 3 5 E , ▁within ▁the ▁core ▁of ▁the ▁Dallas – F ort ▁W orth ▁met ro plex . ▁ ▁Route ▁description ▁ ▁| - ▁| Tex as ▁|| ▁ ▁| - ▁| Ar k ansas ▁|| ▁ ▁| - ▁| Total ▁|| ▁ ▁| } ▁ ▁I - 3 0 ▁is ▁the ▁short est ▁two - digit ▁Inter state ▁ending ▁in ▁zero ▁in ▁the ▁Inter state ▁system . ▁The ▁Inter states ▁ending ▁in ▁zero ▁are ▁generally ▁the ▁longest ▁east – west ▁Inter states . ▁It ▁is ▁also ▁the ▁second - short est ▁major ▁Inter state ▁( ending ▁in ▁zero ▁or ▁five ), ▁behind ▁I - 4 5 . ▁The ▁largest ▁metropol itan ▁areas ▁that ▁I - 3 0 ▁travel s ▁through ▁include ▁the ▁Dallas – F ort ▁W orth ▁met ro plex , ▁the ▁Tex ark ana ▁metropol itan ▁area , ▁and ▁the ▁Little ▁Rock ▁metropol itan