County routes in Lake County, California
There are several county routes in Lake County, California that are numbered using a different system than that of the rest of the state. County routes in California are typically numbered using a region letter followed by a number. Routes in Northern California are in regions A, B and D. Central California has regions E, G and J while letters N, R and S are assigned to Southern California. Lake County uses numerical designations for their county routes, bypassing the alphanumeric designations of the rest of the state.County Route 145 is a county highway in Lake County. It was paved in 1984.County Route 502 is a county highway in Lake County. It was constructed to allow access to Konocti Bay.County Route 505, also known as Gaddy Lane, is a county highway in Lake County.County Route 515 is a county highway in Lake County. It serves The Geysers, as well as residents on Cobb Mountain.