Caltrans District 4 - Working to bring you safe, efficient, accessible, and environmentally responsible highways and bridges in the Bay Area.

Oakland, CA
🚗✨ Heads up, Bay Area drivers! Before hitting the road, check #QuickMap for real-time traffic updates, closures, chain controls & more:📲 QuickMap.dot.ca.gov ✅ Stay informed ✅ Drive safely ✅ #KnowBeforeYouGo
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Ribbon cutting of SR-37 and Fairgrounds Drive Interchange Project in Vallejo. The interchange improvement project will enhance motorist safety and improve bicycle and pedestrian access with construction of a new Diverging Diamond Interchange.
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🌙 While you sleep, our crews are hard at work on SR-4 in Brentwood. If all goes according to plan, the mainline paving from Laurel Road to Balfour Road will be completed by tonight. Thank you for your patience and support as we work to improve your commute. 🚧
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🚧 TONIGHT: SR-4 FULL CLOSURES (Brentwood)🗓 July 6 | ⏰ 8PM–8AM ➡️ EB: Lone Tree Way → Walnut Blvd
➡️ WB: Walnut Blvd → Balfour Rd
🕔 WB reopens at 5AM ⚠️ Detours in place. Expect delays.
Slow down & stay alert for crews. #BeWorkZoneAlert
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Caltrans District 4 retweeted
.@cccpublicworks will perform storm drain repair work on various residential roads in the #Crockett area, starting Mon., 7/13/26 - Fri., 7/31/26, from 8:00 a.m. - 5:00 p.m., Mon. - Fri. Expect up to 15 min. delays due to traffic control & lane closures. bit.ly/4y3cH1n
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🌉I-580 Richmond-San Rafael Bridge July 5–24 🚧EB/WB lane closures (day + night work) At least 1 lane open at all times
• July 5 (8PM–4AM): EB/WB moving closures
• July 7–10 (6AM–2PM): EB lane closures
• July 9: WB shoulder closure (11AM–2PM) ⚠️Expect delays. Merge safely.
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🚧 SR-24 (Lafayette) Night Work Starting July 13 Mon–Sat | ⏰ 9PM–9AM ➡️ EB SR-24 lane #4 + shoulder CLOSED
📍 Acalanes Rd → El Nido Ranch Rd 🛠 Retaining wall repairs & drilling
⚠️ Expect delays. 3 lanes remain open. Plan ahead & slow for crews.
#BeWorkZoneAlert
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Caltrans District 4 retweeted
Traffic Collision With Injuries on Eastbound I-80 West of 7TH St in San Francisco. Left Lanes Blocked. goo.gl/TU4ZDK
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#TRAFFICALERT: Caltrans has scheduled night closures for paving on US-101 for the Marin Sonoma Narrows B7 project in @maringov from Monday, July 6 through Friday, July 10 from 8:30 p.m.until 6:30 a.m. the next mornings. For more, see: dot.ca.gov/caltrans-near-me/…
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#TRAFFICALERT: Caltrans is scheduled to continue its Capital Preventive Maintenance project along Northbound and Southbound US-101 starting on Sunday night in @maringov. For more, see dot.ca.gov/caltrans-near-me/… @CaltransHQ @marincountyfire @CHPMarin
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#TRAFFICALERT: All five lanes are blocked on Northbound I-280, just south of 11th Street in Santa Clara County, around 1:30 a.m. For real-time traffic, click on Caltrans QuickMap: quickmap.dot.ca.gov/
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All lanes open on NB I-280 as of 2 a.m. For real-time traffic, click on Caltrans QuickMap: quickmap.dot.ca.gov
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#TRAFFICALERT: All lanes open around 10:30 p.m. in San Francisco and Marin counties after 4th of July fireworks on the Golden Gate Bridge. For real-time traffic, click on CaltransQuickMap: quickmap.dot.ca.gov/
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Caltrans District 4 retweeted
UPDATE: Full Closure Now In Effect on the Golden Gate Bridge on Northbound and Southbound US-101 Due to Fireworks. Freeway and Local Detours Are in Place. goo.gl/TU4ZDK
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Caltrans District 4 retweeted
Traffic Collision With Injuries on Eastbound I-80 Connector Ramp to I-580 W-macarthur Maze in Oakland. All Lanes Blocked. goo.gl/TU4ZDK
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Caltrans District 4 retweeted
This Fourth of July, we are launching fireworks from the two towers of the Golden Gate Bridge! Here is everything you need to know: 🌉The show starts at 9:30 pm. Arrive ahead of time to secure your spot.  🌉Expect crowds. 🌉Take public transportation or walk. Parking is extremely limited in viewing areas. 🌉Fireworks will launch from the east side of the Golden Gate Bridge. The best viewing locations have a clear Northwest view of the bridge, like Crissy Field, Marina Green, Pier 39, and Fisherman’s Wharf.  🌉The Golden Gate Bridge will be fully closed to traffic 9 pm - 10 pm. 🌉Complete information can be found at sf.gov/july4.
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🚧 Traffic Alert | Marin County One-way traffic control on SR-131 (Tiburon Blvd.) between Trestle Glen Blvd. & Rock Hill Rd. for vegetation management. 📅 July 6–10 ⏰ 9 a.m.–2 p.m. daily Expect minor delays. Please slow for the Cone Zone and stay alert for crews. 🌿
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🚧 Heads up, San Mateo County drivers! Caltrans will conduct annual safety inspections of the SR-1 Tom Lantos (Devil's Slide) Tunnel nightly July 6–9, from 10 p.m. to 4 a.m. One tunnel will remain open with one-way traffic control. Advisory: conta.cc/445vsU7
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Heads up, US-101 drivers in San Mateo County! Nighttime lane & ramp closures from July 6–31 for paving, guardrail, and electrical work. • NB 101: July 6–31 • SB 101: July 13–31 Closures occur 9 PM–5 AM on weeknights. Follow posted detours. Advisory: conta.cc/4459r7Z
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For the safety of the traveling public, Caltrans crews cleared an encampment site along I-680 in San Jose, Santa Clara County. Crews removed approximately 20 cubic yards of debris. Three individuals were offered services.
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🚧 SR-4 Overnight Work (Brentwood) 🗓 July 1 & July 6 | ⏰ 8PM–8AM
➡️ FULL closure EB SR-4: Laurel Rd → Lone Tree Way
🚫 EB on-ramps @ Laurel Rd CLOSED
⚠️ Lane closures: Hillcrest Ave → Laurel Rd Expect delays. Plan ahead & slow for crews.
#BeWorkZoneAlert
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