Coming from the North:

Take the 99 Freeway heading south to the 58 Freeway going east. Take the Union Avenue exit and turn left to northbound Union Ave, then a right (eastbound) turn onto E. 4th Street.

Coming from the South:

Take the 5 Freeway north and connect to the 99 Freeway heading north. Take the 99 to the 58 Freeway going east to the Union Avenue exit.  Make a left (northbound) turn onto Union Ave, and right (eastbound) turn onto E. 4th Street.