Site work, paving and new construction of a civil project in Petaluma, California. Design plans call for the construction of a bridge / tunnel; for site work for a road / highway; and for paving for a road / highway.

The Caulfield Crosstown Connector, also known as the "Southern Crossing," has been proceeding through preliminary design in FY 21-22. Initial project efforts determined bridge type, bridge layout, and estimated construction costs for a new structure over the Petaluma River extending from Caulfield Lane to Petaluma Blvd. South near the Hwy 101 bridge at the southern end of the City. The preliminary design concept has received U.S. Coast Guard approval for vertical and horizontal clearances over the navigable waterway and bridge openings. The design and layout have been developed to 10% complete and now the project can proceed into the environmental permitting phase. This planning/permitting phase will identify necessary permits and studies (i.e., traffic, cultural, biological), execute those studies, and provide detailed construction cost estimates for the work. Construction could be ready to start in FY 25-26, assuming that funding has been secured. Recent design efforts and flood modeling indicate that a two-leaf bascule bridge is needed instead of the originally planned single-leaf configuration, raising project cost estimates accordingly. This project is currently in the City of Petaluma's FY 2022-2027 CIP. Per the owner, as of July 13, 2022, a design team has been selected. The owner states that the project is not fully designed for construction bidding. A timeline for bidding and construction has not been determined. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.