Construction has started on the Rainier Avenue Paving & Traffic Calming Project in Petaluma. Work is taking place from Sonoma Mountain Parkway to McDowell Boulevard, with traffic control and site setup already in progress. The project will make this busy road safer and smoother for drivers, cyclists, and pedestrians.
Upgrades include new pavement, protected bike lanes, improved crosswalks, and a landscaped roundabout at Rainier Avenue and Maria Drive. The 3-lane layout between North McDowell Boulevard and Maria Drive will be extended to Sonoma Mountain Parkway. Construction will continue through the summer, with completion expected by July 2026. Drivers should expect daytime work, lane shifts, and limited parking, but access to homes will remain open when possible…