<Dd> US 41 in Chicago . The highways travel concurrently to Whiting . </Dd> <Dd> I ‐ 90 northwest of Whiting </Dd> <Dd> US 12 on the Hammond - Gary city line . The highways travel concurrently into Gary proper . </Dd> <Dd> I ‐ 65 in Gary </Dd>

What is the longest freeway in the united states