Caltrans has scheduled freeway closures for northbound Highway 101 and the Petaluma Boulevard South on-ramp. Petaluma Boulevard South at the Petaluma River Bridge will also be closed for several nights of construction.
Caltrans will close Petaluma Boulevard South and the northbound Highway 101 off-ramp to Petaluma Boulevard South on Sunday from 4 a.m. to 11:59 p.m.
Caltrans will spend an additional $5.5 million to keep federally protected birds away from its construction site on the Highway 101 bridge over the Petaluma River.
On Friday night, Caltrans plans to switch northbound traffic to the Highway 101 median lanes being constructed south of the Petaluma River Bridge.
Southbound Highway 101 will be closed at the Petaluma River Bridge tonight from midnight to 4 a.m. and Sept. 19 from 11 p.m. to 6 a.m.
Many readers have asked about the "earthen mound" that is rising in the center median on Highway 101 just south of the Petaluma River Bridge. According to Caltrans, the plan is to raise this section of Highway 101 by more than 20 feet.
There is visible progress being made on the Highway 101 improvement project between Lakeville Highway in Petaluma and Atherton Avenue in Novato, a 9.5-mile stretch, that will add frontage roads, widen bridges and improve three interchanges. As projects in The Narrows are completed, they will open, meaning motorists will notice incremental changes to the landscape rather than a grand opening of all the facilities at the end of the project. A few such pieces are already open.
The new Petaluma River Bridge will be wider for vehicle traffic with a wider footprint in the river for improved nautical navigation.