Ramp, Lane Closures on Northbound, Southbound US-101 as Part of Marin Sonoma Narrows B7 Project in Marin County

Schedule: Monday, Oct. 27 through Friday, Oct. 31 from 9:30 p.m. until 5 a.m.

Marin County - Caltrans has scheduled ramp and lane closures for electrical work on Northbound and Southbound US-101 for the Marin Sonoma Narrows B7 project from Monday, Oct. 27 through Friday, Oct. 31 from 9:30 p.m. until 5 a.m. the next mornings.

Work is weather dependent.

The schedule for ramp closures is as follows:

Monday, Oct. 27: The De Long Avenue on-ramp for Southbound US-101 and the De Long Avenue off-ramp on Northbound US-101.

Tuesday: Oct. 28: The De Long on- and off-ramps on Northbound US-101.

Wednesday, Oct. 29: The Atherton Avenue off-ramp on Northbound US-101.

Friday, Oct. 31: The San Antonio on-ramp on Northbound US-101.

Detours for De Long on- and off-ramp closures on Southbound US-101

• De Long on-ramp closure: Drivers should travel Southbound on Redwood Boulevard and enter Southbound US-101 at Rowland Boulevard.
• De Long off-ramp closure: Drivers should exit at Atherton Avenue and then use Redwood Boulevard to reach De Long Avenue.

Detours for De Long on- and off-ramp closures along Northbound US-101

• De Long Avenue on-ramp closure: Drivers should enter Southbound US-101 at De Long Avenue, exit at the Rowland Blvd off-ramp, turn left, and enter Northbound US-101.
• De Long Avenue off-ramp closure: Drivers should exit at Atherton Avenue, turn left, and enter Southbound US-101 to get to the De Long off-ramp

Detour for Atherton Avenue off-ramp closure on Northbound US-101

• Drivers should exit at San Antonio, turn left, and enter Southbound US-101 to get to the Atherton off-ramp.

Detour for San Antonio on-ramp closure on Northbound US-101

• Drivers must enter on US-101 southbound at San Antonio Road, exit at the Atherton Avenue off-ramp and then re-enter US-101 northbound.

The work will take place just north of Rowland Boulevard, extending to the Marin County/Sonoma County line. Lanes will be closed on Northbound and Southbound US-101 during the Monday through Friday timeline.

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: https://http://quickmap.dot.ca.gov/

| CleanCA.com | #BeWorkZoneAlert | Twitter | YouTube |