APM: N/A Location: E St and SR 20, Williams No signage as SR 20 Business begins. The road has definitely not seen a lot of maintenance since it was a Caltrans facility. Location: E St and 7th St, Williams About a mile later, we’ll approach this kind of sad looking gateway arch at I-5 Business … Continue reading California State Route 20 Business, SR 20 to I-5 Bus