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After temporary closure, board approves permanent closure of Hansen Road overpass at I‑205
Summary
Following an 18‑month temporary closure and data collection, the Board of Supervisors voted unanimously to make permanent the closure of the Hansen Road overpass at Interstate 205, citing reduced heavy‑truck traffic and safety improvements for the Lammersville community.
The San Joaquin County Board of Supervisors on March 25 voted 5‑0 to make permanent the county’s February 2024 temporary closure of the Hansen Road overpass at Interstate 205 after a staff evaluation found fewer heavy commercial vehicles and no significant traffic‑capacity impacts on surrounding county roads.
Public Works Deputy Director Najee Zarif summarized the department’s 18‑month review, which included traffic counts and intersection analyses. Zarif said traffic volumes decreased on Hansen Road segments and that heavy‑commercial vehicle counts declined by 22 to 84 percent on nearby segments. Some nearby segments — notably Mountain House Parkway at the I‑205 westbound ramps — continue to operate at an unacceptable level of service, but staff said that congestion predated the closure and is not primarily caused by the Hansen overpass closure.
Public Works told the board it evaluated requests for new signals at Vonsausen Road intersections and concluded those locations do not meet signal warrants. The department recommended additional traffic‑calming measures near Lammersville Elementary, including a raised crosswalk with relocated rectangular rapid‑flashing beacons and additional speed bumps (two‑thirds of adjacent property owners must agree before new speed bumps are installed).
Several residents and property owners from the Lammersville community addressed the board in support of the permanent closure, saying it had restored safe conditions for children walking to school, for pedestrians and for neighborhood vehicle and horse traffic. Supervisor Rickman, who led the closure request in 2022, thanked Public Works and residents for their collaboration and noted that enforcement remains an important complement to engineering solutions.
The board directed staff to coordinate with the City of Tracy to ensure the city’s adjacent jurisdiction takes corresponding permanent closure actions; Public Works said it will return with options if the city does not close its portion of the overpass.
