Here's the latest information about road construction projects and lane closures throughout Sonoma County during the week of April 8-12, with Highway 101 closures in Petaluma, Santa Rosa's "extra attention" intersection and a roundup of CalTrans projects throughout the North Coast.
The biggest news this week is the start of a new phase of Highway 101 construction on the Sonoma-Marin Narrows project, which brings evening lane closures between Washington Street and Petaluma Boulevard South as the highway is widened from four to six lanes. This phase of the decade-long 101 widening project will take three years, will cost $120 million and at times will involve narrowing traffic to one lane in each direction.
This phase involves reconstructing the Petaluma Boulevard South interchange; replacing the Petaluma River Bridge; constructing or widening nearly three miles of frontage roads; providing new pedestrian and bicycle enhancements; replacing the northbound State Route 116 Bridge and widening the southbound SR-116 Bridge to accommodate future carpool lanes on U.S. 101.
Read more about the project in this story, Petaluma Highway 101 bottleneck to get worse before getting better.
Starting Monday, April 8, Caltrans has scheduled nightly lane closures on northbound and southbound U.S. 101 from just north of the Sonoma County line to the Kenilworth pedestrian overcrossing south of Washington Street. In addition, there will be lane closures on eastbound and westbound State Route 116 at the U.S. 101 Interchange. At least one lane will remain open in each direction on northbound and southbound U.S. 101, and on eastbound and westbound SR 116.
U.S. 101 widening:
Northbound U.S. 101: Monday night through Thursday night, from 11 p.m. to 6 a.m., Friday night from 11 p.m. to 6 a.m., and Saturday night from 11 p.m. to 8 a.m.
Southbound U.S. 101: Monday night through Thursday night, from 10 p.m. to 4 a.m., Friday night from 10 p.m. to 7 a.m., and Saturday night from 11 p.m. to 7 a.m.
State Route 116 interchange at the U.S. 101:
Eastbound SR 116: Monday night through Thursday night, from 10 p.m. to 5 a.m., and Friday and Saturday nights, from 10 p.m. to 6 a.m.
Westbound SR 116: Monday night through Thursday night, from 11 p.m. to 5 a.m., Friday and Saturday nights from 11 p.m. to 6 a.m.
This work is weather dependent. If it is delayed due to weather conditions, it will be rescheduled for a later time.
Santa Rosa police will be monitoring one of the city's most collision-prone intersections, Yulupa Avenue at Hoen Avenue, which last year was tied for fourth place with 9 collisions.
As part of a weekly Monday through Friday special enforcement program, Officer Jeff Adams says officers particularly will be looking for drivers not wearing seat belts, who are illegally using cellphones, are speeding, running red lights or committing lane violations.
Each week, the officers pick one of the city's top 25 collision-troubled intersections to monitor.
To read about the city's other top intersections for collisions, Click Here.