Interstate 238; the Interstate numbering abomination carved out of an otherwise mundane State Highway
How does one make an otherwise unremarkable stretch of State Highway the absolute bane of the road community? Make a small portion of said State Highway into a Interstate Highway but one that retains it's completely out of grid State Highway number. One such route does exist; California State Route 238 and it's better known segment Interstate 238. CA 238/I-238 (I'll be referring to this highway frequently as Highway 238 for simplicity) including a relinquished segment in Hayward is a 16 mile "highway" starting at I-680 in Fremont which heads northwest to I-880 in San Leandro. Only an approximately 2.1 mile segment of Highway 238 between I-580 and I-880 is part of the Interstate system. The numbering oddity behind I-238 stems from the fact that California Legislatively does not allow numbering duplication. In the eyes of the Legislature there is no difference between a State Highway, US Route and Interstate Highway. That being the said all highways ma...