Caltrans will perform overnight maintenance on Bores 1 and 2 of the eastbound Caldecott Tunnel on two consecutive nights – December 2 & 3. All work is dependent on weather. Only one bore will be worked on each night. Schedule:
Caltrans will perform overnight maintenance on Bores 1, 2, and 4 of the Caldecott Tunnel. All work is weather dependent. Closure Schedule:
Bore 4: Mon, Nov 17 — 10:00 PM–4:30 AM Bore 1: Tue, Nov 18 — 10:00 PM–12:00 AM Bore 2: Wed, Nov 19 — 12:00 AM–4:30 AM
All other bores will remain open during work. Expect delays and allow extra travel time.
Here’s a roundup of road work & lane closures for the week of September 29 as issued by Caltrans District 4:
Richmond-San Rafael Bridge – Now through October 2025 – Night/overnight closures of westbound (WB) Lane #2 and the Bike/Ped Path from 7pm to 5am Monday-Friday.
I-80 Night Work (Pinole/Richmond) – Now through late September 2025 – Caltrans will be performing night work on I-80 between Appian Way in Pinole and Carson Blvd in Richmond from 8pm to 5am nightly through late September. Work includes barrier repairs, lighting, and striping.
Westbound SR-4 Full Overnight Closure (Hercules/Pinole/Martinez) – Sept. 29 through Oct. 10 – Full closure of Westbound State Route 4 (SR-4) weeknights from 7pm to 6am between Cummings Skyway and San Pablo Ave. Detour: Cummings Skyway → WB I-80 → San Pablo Ave. Eastbound SR-4 NOT affected.
Richmond-San Rafael Bridge Lane Closure – October 3 – Lane #2 of Westbound I-580 on the Richmond-San Rafael Bridge will be closed October 3 from 11pm to 6am (Toll Plaza → Marin) for camera installation and deck maintenance. Lane will be #1 OPEN. Expect minor delays, merge safely.
For more information before you hit the road, check in with Caltrans District 4 at QuickMap.dot.ca.gov for real-time updates on road closures, chain controls, traffic, and more.
Caltrans has scheduled overnight closures of Bore 1 of the Caldecott Tunnel on Eastbound State Route 24 (SR-24) for tunnel washing and maintenance.
Caldecott Tunnel Bore #1 will be closed the nights of Monday, September 8, through Wednesday, September 10, from 10am to 4:30pm each night for tunnel washing and maintenance. During the work, all other bores will remain open. Work is weather-dependent.
Traffic Control Measures: Changeable message signs will be in place to assist motorists traveling in the area. Motorists are advised to expect delays and allow extra time. Please drive with caution through the construction zone.
For 24/7 traffic updates, follow 511cc.org on X (formerly Twitter).
For real-time traffic, visit Caltrans QuickMap.
For more information about Caltrans D4 projects, visit Caltrans D4 Current Projects.
Caltrans has scheduled overnight closures of Bore 2 of the Caldecott Tunnel on Eastbound State Route 24 (SR-24) for tunnel washing and maintenance.
Caldecott Tunnel Bore #2 will be closed the nights of Monday, June 16, through Wednesday, June 18, from 10am to 4:30pm for tunnel washing and maintenance. During the work, all other bores will remain open. Work is weather-dependent.
Traffic Control Measures: Changeable message signs will be in place to assist motorists traveling in the area. Motorists are advised to expect delays and allow extra time. Please drive with caution through the construction zone.
For 24/7 traffic updates, follow 511cc.org on X (formerly Twitter).
For real-time traffic, visit Caltrans QuickMap.
For more information about Caltrans D4 projects, visit Caltrans D4 Current Projects.
The EB Bore #4 of the Caledcott Tunnel will be closed from 10pm to 4:30am on Wednesday, May, for scheduled maintenance work. Work will wrap up by 4:30am on Thursday, May 8. During the maintenance work, all other bores will remain open.
Expect delays. Please drive slowly through the Cone Zone.
For 24/7 traffic updates, follow 511cc.org on X (formerly Twitter).
For real-time traffic, visit Caltrans QuickMap.
For more information about Caltrans D4 projects, visit Caltrans D4 Current Projects.
Caltrans has scheduled one-way traffic control on the Antioch Bridge (CA-160), Friday night January 10th, from 8pm to 4am. Northbound SR-160 from the Antioch Toll Plaza to the north end of the bridge will be closed from 8pm to 11:59pm on January 10. Traffic will be able to flow northbound in the southbound lane as directed by flaggers.
Southbound SR-160 from the north end of the bridge to the Antioch Toll Plaza will be closed from midnight to 4am on January 11. Traffic will be able to flow southbound in the northbound lane as directed by flaggers.
The closure will extend the entire length of the bridge. Caltrans will turn on the Changeable Message Signs to notify the public ahead of time. For real-time traffic conditions, visit Caltrans QuickMap.
The EB Bore #2 of the Caledcott Tunnel will be closed from 10pm to 4:30am on three consecutive nights – June 10, 11, and 12 – for scheduled maintenance work. Work will wrap up by 4:30am on Thursday, June 13. During the maintenance work, all other bores will remain open.
The WB Bore #3 of the Caledcott Tunnel will be closed from 10pm to 4:30am on three consecutive nights – Monday, October 23 through Wednesday, October 25 – for scheduled maintenance work. All other bores will remain open.
State Route 4 will be closed in both directions from Lone Tree Way to Sand Creek Rd for construction on the Mokelumne Trail Bike/Ped Overcrossing. The Hwy 4 closure will run from Friday night, June 16, (9pm) through early Saturday morning, June 17 (6am). Details: http://bit.ly/cctamok
State Route 4 will be closed in both directions from Lone Tree Way to Sand Creek Rd for construction on the Mokelumne Trail Bike/Ped Overcrossing. The Hwy 4 closure will run from Friday night, May 12, (12am) through early Saturday morning, May 13 (6am). Details: http://bit.ly/cctamok
Brentwood Area Traffic Advisory: Starting tonight (Fri 3/31) – State Route 4 in Brentwood will be closed nightly (in the late night/early morning hours) from Lone Tree Way to Sand Creek Rd for work on the Mokelumne Trail Bike/Ped Overcrossing through Thursday 4/6.
TONIGHT (3/31): EB Hwy 4 closed from midnight-6AM Saurday. Details: http://bit.ly/cctamok
The EB Bore #2 of the Caledcott Tunnel will be closed 6/22 and 6/23 from 10 PM to 4 AM each night for scheduled maintenance work. All other bores will remain open.
