APM: 4 Location: US 101 and Lakeview St, Petaluma Reassurance shield as 116 joins 101. APM: 4 Location: US-101 and Washington St, Petaluma Reassurance shield without 116 after the routes join. APM: 4 Location: US-101 and Washington St, Petaluma Reassurance shield at the Washington St interchange. APM: 5 Location: US-101 and Washington St, Petaluma Reassurance shield after Washington St. … Continue reading California State Route 116, US-101 to US-101 Bus