Caltrans District 4 - Working to bring you safe, efficient, accessible, and environmentally responsible highways and bridges in the Bay Area.
Oakland, CA
Joined June 2011
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🚨Coming This Weekend🚨
WB I-80 Bayshore Freeway Closed from 5th St. to 15th St.
👉When: Fri., Oct. 23, 11 p.m. to Mon., Oct. 26, 6 a.m.
🚗Bay Bridge to SF will be severely congested
Consider public transit 🚄, San Mateo or Richmond bridge.
Details at sfhighwayprojects.com
Caltrans District 4 retweeted
BART 20 Minute Delay on the San Francisco Line in All Directions, Due to Police Activity. goo.gl/TU4ZDK
Plan ahead Contra costa county @CA_Brentwood @CHP_ContraCosta @CoCoSheriff @cccpublicworks @511ccta @CCCounty @cccta @KCBSAMFMTraffic
#PlanAhead #Stockton #DiscoveryBay Additional 36-hour full closure of SR-4 from Roberts Road to SJ/CC County line scheduled to begin at 10pm, Fri., Oct. 23 until 10am, Sun., Oct. 25, 2026. See detour route below.
Caltrans District 4 retweeted
Heads up: @CaltransD4 plans to close all westbound I-80 lanes between 5th and 15th streets this weekend from Friday, 10/23 at 11 p.m. through Monday, 10/26 at 6 a.m.
5th Street is the last exit before the closure. Plan your route before heading out and allow extra travel time.
Detours and project updates: sfhighwayprojects.com
Current traffic conditions: 511.org or quickmap.dot.ca.gov
The schedule is weather-dependent. Check for updates before you travel.
👋The Big WB I-80 Weekend Closure Is Coming Oct. 23-26
👉Avoid Driving Bay Bridge into SF👈 Use Alt. Rte.
✴️If you must drive, expect delays and detours:
Detour Video:
filr.dot.ca.gov/filr/public-…
@511SFBay @SFMTA_Muni @sfcta
Traffic Advisory | Daytime Lane Reduction TOMORROW and THURSDAY.
WHERE: Los Gatos — ONE LANE will close on NB SR-17 between Main Street and the SR-9 connector ramp.
WHEN: 9:30 a.m. to 2:30 p.m. this Wednesday, Oct. 21 and Thursday, Oct. 22
📍Check QuickMap.dot.ca.gov
Driving to SF this Weekend - October 23-26?
🚨PLAN AHEAD: WB I-80 between 5th & 15th streets will be closed, 10/23, 11pm - 10/26, 6am.
✴️Take public transit, or alt. route: San Mateo, Dumbarton, or Richmond-San Rafael bridges.
👉If you drive, expect delays, traffic & detours:
Caltrans District 4 retweeted
Traffic Collision and Overturned vehicle on Westbound CA-12 at Kelly Rd in Napa. All Lanes Blocked. goo.gl/TU4ZDK
Caltrans is doing its part to help get California to #ZeroLitter, like cleaning up this mess at CA-84’s Newark Blvd. exit in Newark. Please do your part by creating no new litter. 💙🚮 #CleanCA @CAgovernor @CA_Trans_Agency @CaltransHQ
🚨Attention Contractors & Small Businesses! Caltrans District 4 will host a virtual MANDATORY Pre-Bid Meeting for Project 04-4Q3214 on Thursday, October 22, 2026 @ 10:00 AM.
Register at: cadot.webex.com/weblink/regi…
Questions? Email us at [email protected]
#TRAFFICALERT: Caltrans will continue its CAPM project along US-101 in @maringov for paving as well as permanent pavement striping this week. For more, see: dot.ca.gov/caltrans-near-me/… @CaltransHQ @MarinSheriff
Caltrans District 4 retweeted
#Concord #PleasantHill -- Northbound #Interstate680 is closed before Willow Pass Road due to a head-on crash caused by a wrong way driver. Traffic being diverted onto #Highway242. (Photo: @CaltransD4) #KCBSTraffic.
✨Reopened! All SB U.S. 101 Bayshore Freeway (Hospital Curve) lanes & One NB Lane Reopened
👏Many thanks to outstanding weekend crew who worked around the clock to complete project ahead of schedule.
👉Grinding operations to begin in weeks to smooth out the road on NB US 101.
Some images from Sunday from the US-101 Bayshore Freeway (Hospital Curve) closure in SF. Caltrans Maintenance crews are helping in the closure too, cleaning out drainage inlets as prep for this upcoming winter. For detours and other info, visit sfhighwayprojects.com
Caltrans District 4 retweeted
UPDATE: Residual Delays on Southbound I-880 at Mission Blvd in Fremont. All Lanes Open.
Caltrans District 4 retweeted
Traffic Collision With Injuries on Southbound I-880 at Mission Blvd in Fremont. Right and Center Lanes Blocked. Southbound I-880 Entering at Mission Blvd On Ramp Blocked. Traffic Diverted to Northbound I-880. goo.gl/TU4ZDK
#TRAFFICALERT: Reminder, closure continues for US-101 Bayshore Freeway (Hospital Curve) on Sunday in SF. Closure in place until 6 a.m. on Monday. For detours and other info, visit sfhighwayprojects.com
#TRAFFICALERT: Five of six lanes are blocked on Southbound Interstate 880 (I-880) in Alameda County due to a multiple-vehicle collision. Motorists are advised to expect delay and use alternate routes. There is no estimated time of opening.
#TRAFFICALERT: All four lanes are blocked on Eastbound Interstate 580 just west of Grant Line Road in Alameda County due to a collision. Motorists are advised to expect delays and use alternate routes.
#TRAFFICALERT: Alameda County, EB-580 just west of Grant Line Road, all lanes are now open just before 6 a.m.