Schedule: Monday, Nov. 17 through Thursday, Nov. 20
Marin County — Caltrans has scheduled electrical work on Northbound and Southbound US-101 for the Marin Sonoma Narrows B7 project from Monday, Nov. 17 through Thursday, Nov. 20 from 9:30 p.m. until 5 a.m. the next mornings. All work is dependent on weather.
The San Antonio Road off-ramp on Northbound US-101 is scheduled to be closed on Monday, Nov. 17 and Tuesday, Nov. 18 during the aforementioned hours. Lanes are scheduled to be closed on Northbound US-101 as well. At least one lane will be open for traffic.
Lanes on Southbound US-101 are scheduled to be closed on Wednesday, Nov. 19 and Thursday, Nov. 20 during the same hours.
Detour for off-ramp closure for San Antonio on Northbound US-101
Drivers must exit at Petaluma Boulevard South/ Kastania Road, enter US-101 southbound, and exit at San Antonio Road
Daytime access will be available for motorists.
On Monday, Sept. 29, ]Caltrans opened the long-awaited, continuous HOV lanes (third lanes) on Northbound and Southbound US-101. This was another major milestone for the project. This work removed merges on Northbound US-101 (just north of Atherton Avenue) and Southbound US-101 (south of Kastania Road), which opened three continuous lanes through the project limits.
Construction for the project includes widening US-101 to install HOV lanes for 3.5 miles along the northbound lanes from North Novato to the Marin, Sonoma line, and for 6.3 miles along the southbound lanes from De Long Avenue to the county line.
This is the last remaining High Occupancy Vehicle (HOV) lane construction project as part of the 16-mile US-101 Marin-Sonoma Narrows (MSN) program. This project will complete and allow continuous HOV lanes on US-101 from Sausalito in Marin County to Windsor in Sonoma County.
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBay
For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.ca.gov/
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