This past Fourth of July Weekend I drove most of Signed County Route J4 from California State Route 4 southeast towards Interstate 5. J4 is a unique County Route which incorporates the corridor of un-built California State Route 239 in addition to small portions of the original alignments of US 48 and Lincoln Highway. The route of J4 is signed from CA 4 in Contra Costa County southeast through Alameda County and San Joaquin County to Signed County Route J3 east of Banta. J4 is a somewhat moderate length Signed County Route at 27.99 miles which was designated in 1960 according to CAhighways.org. CAhighways.org on County Route J4 Between CA 4 southeast to I-205 in Tracy the route of J4 is along the planned corridor of CA 239. Before the 1964 State Highway Renumbering the planned route of CA 239 was added to the State Highway System as a extension of Legislative Route Number 110 west from LRN 5 (US 50) to LRN 75 (CA 4) in 1959. CAhighways.org on LRN 110 The e...
Because every road has a story.