Route 33 is from:
(a) Route 101 near Ventura to Route 150.
(b) Route 150 to Route 5 near Oilfields via the vicinity of Cuyama Valley and Maricopa and via Coalinga.
(c) Route 5 to Route 152 via the vicinity of Mendota.
(d) Route 152 west of Los Banos to Route 5 near Santa Nella.
(e) Route 5 near Santa Nella to Route 140.
(f) Route 140 to Route 5 near Vernalis.