Until the mid 1930s, Lake Temescal extended northeastward into Temescal Canyon. This arm of the lake was traversed by a trestle for the Sacramento Northern railway until the inlet was filled in as part of the Broadway Tunnel (Caldecott Tunnel) project. As part of the project, Landvale Road was extended as a connecting viaduct with Mountain Boulevard and the Montclair District to the south. This required the construction of a large concrete retaining wall along the east side of Lake Temescal to support the fill. The railroad trestle was removed and the Sacramento Northern tracks re-laid just below it. Landvale Avenue ran above the wall to an intersection with the new extension of Broadway leading to the tunnel. The retaining wall survives, but the railroad was gone by 1957. Landvale was replaced by the Warren Freeway and Broadway by the Grove-Shafter Freeway in the late 1960s.