I-238California Castro Valley, CAI-580 San Leandro, CAI-880 California Hayward, CA San Leandro, CA 2 I-238 in California is the one true orphan in the 3 digit interstate system as there is no I-38 for it to loop or bypass from. I-238 picked up the number from its previous designation as CA-238. I have no idea how California transportation officials got the feds to buy into I-238. I-238 connects 2 parallel freeways in the SF Bay area before one of them turns and diverges. It connects to I-580 on the east end in Castro Valley. It connects to I-880 on the west end in San Leandro. *** Speed limits may not be correct on this stripchart. *** I-238 provides access to: Castro Valley, CA Hayward, CA San Leandro, CA WestboundEastbound EASTI-580 565 (70 CA)2004I-238 begins 565 (I-580)I-238 ends 1414 I-580 WestMacArthur FreewaySan LeandroOakland CastroVly Blvd2I-5804 3CA-2382Mattox Rd I-580 EastArthur H Breed Jr FwyCastro ValleyDublinLivermore I-580 WestMacArthur FreewaySan LeandroOakland CA-238Foothill BlvdCastro Valley BlvdMattox RdMisstion BlvdCastro ValleyHaywardFremont CA-238Foothill BlvdMattox RdMission BlvdHaywardFremont Castro Valley BlvdCastro Valley 113 123 1515 CA-185170th AveMission Blvd14th StSan LeandroHayward CA-1855170th Ave CA-1854LewellingBlvd CA-185Lewelling BlvdMission Blvd14th StSan LeandroHayward 122 113 161716 I-880 SouthNimitz Fwy SouthHaywardFremontSan Jose Springlake DrHesperian BlvdSan LeandroHayward Washington AveSan Leandro I-880 NorthNimitz Fwy NorthSan LeandroOakland 24HesperianBlvd1WashingtonAve2I-8801Beatrice St 22HesperianBlvd5I-880 I-880 SouthNimitz Fwy SouthHaywardFremontSan Jose Washington AveSan Leandro 065 (I-880)I-238 ends 065 (70 CA)2004I-238 begins WEST WestboundEastbound CA/I238-CA.xml23 DEC 2005