State Route 275 (SR 275) is an unsigned state highway connecting West Sacramento, California and Downtown Sacramento. Since 1996, the highway has been legally defined to be the length of the Tower Bridge crossing the Sacramento River. Prior to that year, SR 275 was also known as the West Sacramento Freeway, and was a short spur connecting Interstate 80 Business / U.S. Route 50 in West Sacramento, and the Tower Bridge. SR 275 also extended east into Sacramento along the Capitol Mall from the bridge to 9th Street, just west of the California State Capitol. West Sacramento completed a project to replace the freeway with a pedestrian-friendly street named Tower Bridge Gateway. Route description Since 1996, SR 275 has been defined to be the length of the Tower Bridge, a four-lane lift bridge across the Sacramento River that formerly carried a Sacramento Northern Railroad track in the center. Prior to 1996, SR 275 was part of the West Sacramento Freeway. The West Sacramento Freeway designation begins on Interstate 80 at exit 81 (West Capitol Avenue), the east end of the Yolo Causeway. It soon splits, with I-80 exiting to bypass Sacramento to the north and Interstate 80 Business (legislatively U.S. Route 50) continuing east via exit 82 towards downtown. After one interchange, at Harbor Boulevard (exit 1/1B), the freeway splits again, with Bus. 80 turning abruptly southeast over the Pioneer Memorial Bridge to avoid downtown Sacramento. The original SR 275 designation then began here, at exit 3 of Bus. 80, with full access to and from the intersecting Jefferson Boulevard (State Route 84). After the Jefferson Boulevard interchange, the road — now maintained by the city of West Sacramento as Tower Bridge Gateway — crosses the new Grand Street at an at-grade intersection. This intersection replaced a partial trumpet interchange, oriented towards West Capitol Avenue with a missing westbound entrance, in 2007. After Tower Bridge Gateway crosses under the Union Pacific Railroad line that used to cross the Tower Bridge, it approaches an intersection with 5th Street. It was formerly a ramp that entered the westbound lanes from the intersection of West Capitol Avenue and 5th Street, which completed the former interchange at Riske Lane. Two blocks to the east, Tower Bridge Gateway approaches its final intersection in West Sacramento with 3rd and Riverfront Streets. A westbound offramp formerly led to West Capitol Avenue and 3rd Street, with eastbound access