Healdsburg’s unpopular Foss Creek Circle will be returned to two lanes today. Traffic will continue to snarl at the Porter Creek bridge, and the summer bridge at Guerneville’s Vacation Beach is now open. Sonoma County road crews will be paving Lakeville Road and working on the Agua Caliente roundabout in Sonoma.

Highway 101 construction continues on the Airport Boulevard interchange north of Santa Rosa and the widening project in Petaluma. Also watch for Caltrans crews at Highway 12 and Farmers Lane/Hoen Road in Santa Rosa as they excavate dirt and transport it to the Airport Boulevard site.

Porter Creek Bridge — Expect road closures of up to 30 minutes and traffic delays of 45-60 minutes for drilling piles on the Porter Creek Road Bridge for the next three weeks, according to the construction coordinators. Work hours are 7 a.m.-7 p.m. daily.

Once that work is complete, traffic should flow smoothly until until late July, when the 160-foot-long pre-fab steel beams arrive. At that time, there will be rolling road closures with traffic detoured onto Calistoga Road for one or two nights during delivery. Additional delays will occur when the beams are being installed (date not yet determined). Barring any inclement weather and unforeseen subsurface conditions, the project should be complete by late May or early June 2014.

Healdsburg — Foss Creek Circle will become a two-way street today, June 24, with plans to have the center line painted Sunday evening. Crews were scheduled to remove all one-way markings this morning. During the transition, the Healdsburg Police Department will provide traffic control. Questions? Call 431-3346.

Petaluma — Pile-driving has begun along Highway 101 from the State Route 116 northbound on-ramp to Caulfield Lane. The piles are the first step in building a sound wall that should be in place by late September or early October 2013. All work will be 7 a.m.-5 p.m. Monday through Friday. More info: dot.ca.gov/dist4/101petalumablvd, 781-2245 or on Twitter @Sonoma101.

Guerneville — The Vacation Beach Summer Crossing west of Guerneville is now open.

Other Sonoma County work projects, courtesy of Rob Silva, Road Department Operations Manager:

Lakeville Road – night time paving begins Monday night on Lakeville Rd between Old Lakeville Rd 2 and Hwy 116. Posted work hours are 7:00 PM to 5:00 AM nightly with one lane traffic controls. Expect delays up to 30 minutes.

Arnold Dr at Agua Caliente Road Roundabout – storm drain installation with minor grading, 7:00 am – 5:00 pm. Intermittent traffic controls with up to 5 minute delays.

Road Maintenance crews — Monday the crew will move to River Rd west of Santa Rosa. Pavement repair work will be Monday through Wednesday between Olivet Rd and Trenton-Healdsburg Rd. One lane traffic controls with some delays between 7 am and 4pm daily – message board advance notification is being posted today.  On Thursday the grinding/paving crew will move to Slusser Rd off River Rd.