@travel.memories0: RICHMOND-SAN RAFAEL BRIDGE OVERNIGHT LANE CLOSURE Caltrans District 4 engineers and electrical crews will perform federally mandated bridge inspections and light repairs on the Richmond-San Rafael Bridge (I-580) Friday night. 📆17 Friday, Sept. 18 - Saturday, Sept. 19 ⏰11 PM-5 AM Westbound I-580: • Lane #1 CLOSED from the Toll Plaza to the Marin County line V Lane #2 remains OPEN 🚴♀️So Bike path remains OPEN Motorists should expect minor delays, prepare to merge and allow additional travel time. Changeable Message Signs (CMS) will alert drivers approaching the closure. ⚠️Public safety is Caltrans' top priority. Please reduce your speed, stay alert and give engineers, electrical crews and equipment plenty of room to work safely. Caltrans District 4 appreciates the public's patience while crews complete this important work to help maintain the integrity of the bridge.