Historical Tour of old US 99
Great Central Valley – San Joaquin Valley
Union Avenue / SR-99 : Business SR-99
This section of US 99 was first constructed in 1915 as a narrow, concrete, two lane road. It was widened to a four-lane highway in 1939. It was later modified and slightly modernized in 1949. Finally in 1962, Union Avenue was entirely bypassed to the west by the present freeway. Union Avenue was then redesignated Business SR-99.
Go North on US 99 to Bakersfield
Go South on US 99 to Los Angeles
Return to the US 99 Introduction page
