Crews are back at work on North Bay roads after a holiday break. Work on the Highway 101 widening project around Petaluma is scheduled to shift traffic on the northbound Highway 116 overpass. The work was rescheduled from December due to weather.

Elsewhere, sewer work in Rohnert Park is closing part of Santa Alicia Drive, and normal road maintenance in Sonoma and Mendocino counties will cause some delays.

The details:

Petaluma: Construction continues for the U.S. 101/State Route 116 Interchange Project and the U.S. 101 Petaluma Boulevard South Interchange Project.

Traffic Shift for Northbound U.S. 101
Saturday morning, Jan. 11, Caltrans has scheduled a traffic shift for northbound U.S. 101 at the State Route 116 interchange. Northbound traffic will to be shifted to the left across the median to the southbound bridge. There will be two northbound lanes and two southbound lanes sharing the same bridge. After passing over SR 116, northbound traffic will shift to the right and return to the original roadway. This traffic shift will remain in effect until late 2014 while the old northbound bridge over SR 116 is removed and replaced with a new bridge.

Northbound and southbound lanes will be separated by a concrete barrier, and the speed limit in the construction zone will reduced to 45 MPH. It is essential for the safety of motorists and construction workers that this speed limit is observed. This speed limit will be enforced by the California Highway Patrol.

U.S. 101 Lane and Ramp Closures
·        One lane of northbound U.S. 101 will be closed Wednesday night, Jan. 8, and Thursday night, Jan. 9, from 10 p.m. to 6 a.m., and Friday night, Jan. 10, from 10 p.m. to 7 a.m.

·        One lane of southbound U.S. 101 will be closed Thursday night, Jan. 9, from 10 p.m. to 4 a.m. and Friday night, Jan. 10, from 10 p.m. to 7 a.m.

·        The northbound U.S. 101 off-ramp to SR 116 will be closed Friday night, Jan. 10, from 10 p.m. to 6 a.m.

·        The eastbound and westbound on-ramp from State Route 116 to northbound U.S. 101 will be closed Friday night, Jan. 10, from 10 p.m. to 6 a.m.

Rohnert Park: Trenching work has begun on Santa Alicia Drive and is expected to continue through the rest of this week. Access to City Hall and residents on Avram Avenue is available via Commerce Boulevard and Arlen Avenue. Flaggers will be directing traffic at Santa Alicia Drive during this time. Traffic controls will be in place between 8 a.m. and 4:30 p.m. daily Monday through Friday.  Alternate routes are advised.

Sonoma County: A county contractor will resume work on the Porter Creek Rd Bridge Replacement Project this week. Work hours are posted as 7 a.m. to 7 p.m. daily – intermittent traffic delays of up to 20 minutes can be expected when the contractor is working within the travel way.

For other Sonoma County Road maintenance projects this week, two Bridge crew projects will be getting underway this week –  on Fort Ross Road between Seaview Road and State Hwy 1. Expect up to 30 minute delays as the crew begins driving pile for a retaining wall. Work hours are 8 a.m. to 3 p.m. daily. The second project will be on Summer Home Park Road. The crew will be replacing a cap on a existing viaduct wall. The work location will be just beyond the Lodge in Summer Home Park – 30 minute delays can be expected.

Cal Fire crews will return this week to assist county road crews with roadside brush and vegetation removal today. Work this week will be on Stewarts Point Skaggs Springs Road and Occidental Road between High School Road and State Hwy 116. One lane traffic controls will be in effect.

The Sonoma County Water Agency will have their contractor continue water and sewer line replacement work this week in the Roseland area – Gloria Drive between West Avenue and Westwood Drive will remain closed to through traffic. Local traffic will be permitted access in and out during the project.

Mendocino County: Route 1 – Replacement of the Greenwood Creek Bridge will continue.  One-way traffic control with a temporary signal will be in effect 24 hours per day, 7 days per week.  Motorists should anticipate 5-minute delays.

Route 1 – Replacement of a culvert with a bridge at Dunn Creek will continue.  One-way traffic control with a temporary signal will be in effect 24 hours per day, 7 days per week.  Motorists should anticipate 5-minute delays.

Route 101 – Caltrans will perform slide repairs near the Korean War Veterans Memorial Bridge (near Frog Woman Rock).  Northbound traffic will be restricted to one lane 24 hours per day, 7 days per week.  Motorists may experience minor traffic slowdowns.

Route 128  – Tetra Tech, Inc. of Rancho Cordova has been issued a Caltrans Encroachment permit for utility work just west of the Mendocino-Sonoma County Line. Work hours are 9 a.m. to 3 p.m., weekdays. One-way traffic control will be in effect.  Motorists should anticipate 5-minute delays.

Be Sociable, Share!



  1. stuck in the narrows

    When the article refers to the bridge over 116, it says “old”. But, it seems to me that the thing was just build, maybe 6 years ago????When was it built? Who is planning these things?

    January 10th, 2014 8:40 am

  2. Road.Warrior

    The southbound bridge over Highway 116 was replaced about 10 years ago, but the northbound bridge is part of the original highway construction. The current project will replace the northbound bridge with a wider bridge but will not replace the newer southbound bridge.

    January 10th, 2014 3:07 pm

Submit Your Comments


Required, will not be published