Caltrans District 4

04/14/2022

A turkey vulture alights on a partially-built bridge column on the Hwy 1 Gleason Beach Project on the Sonoma Coast. https://gleasonbeachrealignment.org/

04/12/2022

Last year, Caltrans asked the Bay Area their opinion about bike highways. Caltrans has now developed a few ideas and wants your feedback! Share your input by Friday, April 22 by going to: surveymonkey.com/r/BikeHighwaySurvey2

04/16/2021

🚧🦺🚨: Crews will continue maintenance work on State Route 12 Rio Vista Bridge starting at 9 PM, Thurs. 4/15.
To ensure the safety of workers, one-way traffic control will be in place during from 9 PM to 5AM.
For live road conditions ▶️ quickmap.dot.ca.gov

04/15/2021

: Caltrans has scheduled a full overnight closure on WB State Route 37 and the NB State Route 29 connector ramp starting Thursday, April 15, 2021. Crews will be closing the connector ramp from 7PM-6AM.
The overnight full closure of WB SR-37 will be from 10 PM-6 AM

04/14/2021

🚧🦺🛣️: One-Way traffic control is currently in place on State Route 12 "Rio Vista Bridge" as bridge crews will be making road and joint repairs including cleaning out debris from the bridge joints.
One-Way traffic control will continue to be in place until 5 AM.

04/13/2021

Hi Neighbors,

Good news! The U.S. Hwy 101/Peninsula Avenue Interchange Project is accepting public comments.

The California Department of Transportation (Caltrans) has initiated a public review period and is conducting a virtual scoping meeting to request comments on the scope and content of a planned Environmental Impact Report/Environmental Assessment (EIR/EA) for the proposed U.S. Highway 101/Peninsula Avenue Interchange Project in San Mateo County.

Send your comments by May 24, 2021 to:

Caltrans District 4

Attn: Tanvi Gupta

P.O. Box 23660 MS 8B

Oakland, CA 94623-0660

or via email to [email protected]

Still want some info before you submit your comments? Join the virtual scoping meeting on April 28, 2021 at 6 p.m. where project team members will be available to clarify information about the project and the process for submitting comments.

Find all the project’s documents and the virtual meeting link at www.cityofsanmateo.org/Peninsula. No registration required for the meeting, remember to bookmark the page to join the meeting on April 28, 2021 at 6 p.m. 📆

04/11/2021

🚨🛣️🚧 Several lanes are blocked on SB I-880 in Hayward, Alameda County after a big rig jack-knifed. is on scene. Motorists are advised to expect delays and to use an alternate route. For Live Road Conditions▶️ quickmap.ca.dot.gov

04/11/2021

: is investigating a multi-vehicle fatal crash on WB I-80 near Dixon in Solano County. Several WB lanes are currently blocked. Motorists traveling on WB I-80 will be diverted off to Dixon Blvd as police continue their investigation. For Live Road Conditions ➡️ Quickmap.dot.ca.gov

04/09/2021

: Caltrans has CANCELLED the scheduled overnight full closure of WB I-80 in Fairfield for Friday, April 9, 2021, which was scheduled at 11PM.
Crews working on the I-80/I-680/SR-12 Interchange Project were able to complete pre-construction work last night.

04/08/2021

Caltrans will hold a public meeting via Zoom for the State Route 1 Traffic Operational Systems Improvement Project in San Mateo County. Thursday, April 8, 2021, 5:30-7:00 PM. For more details go to deavpm.wixsite.com/sr-1tos

04/08/2021

: WB I-80 at I-680 Connector Ramp will be closed overnight for three consecutive nights starting tonight, Wed. April 7, 2021 through Friday, April 9, 2021,11 PM to 4 AM.
Motorists traveling WB will need to enter onto the I-680 connector ramp travel SB to connect to I-780 (Curtola Parkway) back onto I-80 during the overnight closures.
Motorists are advised to expect traffic delays.
Learn More ▶️bit.ly/31UsJN1

04/08/2021

🚧🛣 A full overnight closure of the State Route 61 Webster Tube will be starting tonight, Wed. April 7, 2021 starting at 10 PM until 5 AM.
The Posey Tube will remain OPEN.
The Webster and Posey tubes connect the cities of Alameda and Oakland.

04/06/2021

We’re thinking about Sean’s family and friends this week. Sean was a dedicated and hardworking Equipment Operator at Caltrans District 4. He’s missed everyday.

Today, we honor the memory of Sean Merriman, Caltrans District 4 Equipment Operator. On April 4, 2006, Mr. Merriman was repairing U.S. 101 when he was killed in the line of duty. 🧡

04/06/2021

Never forgotten 🧡

Today, we honor the memory of Charles Warner, Jr., Caltrans District 4 Maintenance Leadworker. On March 27, 1994, Mr. Warner was supervising an inmate crew on Interstate 880 in San Leandro when he was struck and fatally injured by an errant truck driver. 🧡

04/06/2021

: Motorists traveling eastbound on I-80 near Fairfield, Solano Co. will need to exit Red Top Road onto Lopes Road back onto the I-80 EB on-ramp as crews continue their work on the I-80/I-680/SR-12 Interchange Project. Learn more▶️bit.ly/39InjJy

04/06/2021

Crews in SF will be shutting down power tonight Monday 4/5/21 (only) from 10p-6a inside the SR-1 Gen Douglas MacArthur Tunnel and use portable lighting to switch power to a new set of lighting controllers. Lane closure details here bit.ly/3se3AYH

04/05/2021

: Caltrans has scheduled five consecutive nights of a full overnight closure of WB/EB Interstate 80 in Fairfield, Solano County. The closures will begin tonight, Monday, April 5, 2021 at 10 PM. Learn More ▶️ bit.ly/3fI4Kc4

04/04/2021

REMINDER: Overnight Closure on U.S. 101 (from East Hillsdale Boulevard to SR-92)- Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM
As part of the San Mateo 101 Express Lanes Project, an overnight closure on Northbound U.S. 101 is required to remove an overhead sign structure between East Hillsdale Boulevard and SR-92, in/near the cities of San Mateo and Foster City. The overnight closure on U.S. 101 will occur Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM, when traffic volumes are usually light.

Motorists are advised to be familiar with the proposed detour routes and allow extra travel time. The closure location and time will be displayed on changeable message signs at least one week in advance.

Detour Routes:
Check the “Upcoming Overnight Closures on U.S. 101” page on 101express.com for a detailed map of the exact detour routes.

Learn More:

* Visit 101express.com
* Check out the Project’s video on the freeway closures and detour routes. Click here to watch!
* Access real-time traffic conditions on the Caltrans QuickMap: quickmap.dot.ca.gov
* Sign up for weekly updates by emailing with the subject line “weekly” to [email protected]
* Follow on Twitter for the most up to date information on freeway closures and other construction activities planned each week.

04/03/2021

Help plan the future of SR 37!

Caltrans, the Metropolitan Transportation Commission
and transportation agencies for Marin, Napa, Solano and Sonoma counties are seeking your input on the Future of Highway 37. These agencies will be participating in an upcoming online public Townhall meeting hosted by Senators McGuire and Dodd.

At this meeting the agencies will discuss three coordinated planning efforts to develop solutions for improving SR 37. These planning efforts include:

• An Ultimate Resilient Sea Level Rise Design Alternatives Assessment focused on Highway 37 within Marin and Sonoma counties between U.S. 101 and Highway 121
• A Comprehensive Multimodal Corridor Plan to identify goals, corridor needs and challenges, and project priorities for various modes of travel to inform decision-making and future funding.
• A corridor-wide effort known as the Planning and Environmental Linkage to identify and narrow the range of alternatives to be advanced for environmental review and construction
The public is invited to attend this Townhall to learn more and find out how to become involved in the planning for the future of this critical transportation corridor.

Please review the attached flyer to learn how to become involved and make your ideas heard!

For more information, please visit: www.Resilient37.org

04/01/2021

REMINDER: Overnight Closure on U.S. 101 (from East Hillsdale Boulevard to SR-92)- Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM
As part of the San Mateo 101 Express Lanes Project, an overnight closure on Northbound U.S. 101 is required to remove an overhead sign structure between East Hillsdale Boulevard and SR-92, in/near the cities of San Mateo and Foster City. The overnight closure on U.S. 101 will occur Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM, when traffic volumes are usually light.

Motorists are advised to be familiar with the proposed detour routes and allow extra travel time. The closure location and time will be displayed on changeable message signs at least one week in advance.

Detour Routes:
Check the “Upcoming Overnight Closures on U.S. 101” page on 101express.com for a detailed map of the exact detour routes.

Learn More:

* Visit 101express.com
* Check out the Project’s video on the freeway closures and detour routes. Click here to watch!
* Access real-time traffic conditions on the Caltrans QuickMap: quickmap.dot.ca.gov
* Sign up for weekly updates by emailing with the subject line “weekly” to [email protected]
* Follow on Twitter for the most up to date information on freeway closures and other construction activities planned each week.

03/29/2021

Daytime lane closures in SF involving anticipated noise and delays on U.S. 101 Lombard Street. Details here bit.ly/3fllTYY We thank you for your patience as we work to maintain our state (local) highways

03/26/2021

from last week. The next two closures to work on the center of the bridge will take place early July and early October. We thank you for your patience as we work to maintain our state highways and bridges

03/24/2021

Caltrans District 4 () | Twitter

NOTICE: Overnight Closure on U.S. 101 (from East Hillsdale Boulevard to SR-92)- Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM
As part of the San Mateo 101 Express Lanes Project, an overnight closure on Northbound U.S. 101 is required to remove an overhead sign structure between East Hillsdale Boulevard and SR-92, in/near the cities of San Mateo and Foster City. The overnight closure on U.S. 101 will occur Sunday, April 4th from 11:00 PM to Monday, April 5th at 4:00 AM, when traffic volumes are usually light.

Motorists are advised to be familiar with the proposed detour routes and allow extra travel time. The closure location and time will be displayed on changeable message signs at least one week in advance.

Detour Routes:
Check the “Upcoming Overnight Closures on U.S. 101” page on 101express.com for a detailed map of the exact detour routes.

Learn More:

* Visit 101express.com
* Check out the Project’s video on the freeway closures and detour routes. Click here to watch!
* Access real-time traffic conditions on the Caltrans QuickMap: quickmap.dot.ca.gov
* Sign up for weekly updates by emailing with the subject line “weekly” to [email protected]
* Follow on Twitter for the most up to date information on freeway closures and other construction activities planned each week.

The latest Tweets from Caltrans District 4 (). Caltrans District 4 - Working to bring you safe, efficient, accessible, and environmentally responsible highways and bridges in the Bay Area. Oakland, CA

03/22/2021

🚨🚧🦺 I-80/I-680/SR-12 Interchange 🛣️
Crews will be closing EB SR-12 at Red Top Road overnight for five-consecutive nights. The closure will be starting on Monday, 3/22 to Friday, 3/26, from 9 PM until 5 AM. Detour will be in place ▶️ quickmap.dot.ca.gov

03/22/2021

We are pleased to inform you that the NB 101 Central San Rafael off-ramp is now open as of 2:20 AM.

03/22/2021

Before and after as the roller compacts the top layer of asphalt concrete at the beginning of the Harbor Bridge. One abutment down. One to go. Crews are right on schedule to reopen the NB 101 Central San Rafael off ramp at 5 AM

03/22/2021

Backfilling with rock is now complete. Time for some top paving.

03/22/2021

as explained by PIO, Stephen Chun. Crews are on schedule to reopen the off ramp by tomorrow (Monday) morning at 5 AM. The next two closures to work on the center of the bridge will take place early July and early October

03/22/2021

Up close and personal at Abutment 1 taking a final look before backfilling with rock and paving asphalt concrete on top of the pile trench

03/21/2021

The concentrated noise is complete. Crews are on schedule to reopen the NB 101 Central San Rafael off ramp by tomorrow (Monday) morning at 5 AM

03/21/2021

still effect until Monday 3/22 @ 5 AM. Pictured here, from Friday night, is the Harbor Bridge coming off the NB 101 Central San Rafael off ramp. The new bridge will be built to seismic and safety standards

03/21/2021

❓Why is this work needed?
✅ Built in 1941 in this marine environment
🦺Concrete spalling was observed under the deck
⚠️The exposed rebar has rusted overtime
🚧 The new deck will be built to seismic and safety standards

03/21/2021

Crews are now driving the steel piles using an impact hammer. Noise is expected throughout the night into Sunday. We regret any inconvenience and thank you for your patience and understanding

03/20/2021

👀 closely and you can see the pile being vibrated into the ground:
➡️ vibrated 5 feet down or when they hit resistance
➡️ 55 foot in length
➡️ takes about 20 min, sometimes need to be pulled up as seen here to reset

03/20/2021

🦺are preparing to vibrate the first of 25 cast in steel shell (CISS) piles, 24” diameter 🔨They will then drive them to tip with an impact hammer. 🚧Abutment 1 (beg of bridge) will have 15 piles. 🚧Abutment 3 (end of bridge) will have 10 piles.

03/20/2021

is a Senate Bill 1 funded project. Thank you for your patience, safety and cooperation as we work to maintain our state highways and bridges

03/20/2021

Crews will trench the roadway to assess where the 25 cast-in-steel-shell piles will be installed ➡️
✅ 15 piles at Abutment 1; the beg of the bridge
✅ 10 piles at Abutment 3 (picture here); the end of the bridge