California’s gas tax is going up 2.8 cents per gallon on Friday. The same 2.8 cent tax hike per gallon starting July 1 that will cost drivers 42 cents every time they pump 15 gallons into their vehicle, is the linchpin component for funding the $151 million upgrades planned in three phases as part of the 120 Bypass/Highway 99 interchange upgrades. It also involves demolishing and replacing the Austin Road freeway overcrossing.