interstate interstate state california serves connect interstate interstate north originally segment interstate extended rerouted city maintained parkway continues west state route route description interstate state maintained freeway begins lemon street parkway quickly crossing underneath cloverleaf interchange freeway passes parts unincorporated heads southeast marsh bypasses downtown hills north ends north end heading south history paved county road connected north following present maine street columbus parkway state highways designated legislative route connection added unsigned designation extended east north route short spur connecting bridge added route initially entered street left east fifth street making turns built 1940s reducing number turns corner east second streets september approved spurs connections urban areas loop soon numbered east half incorporated number existing legislative routes including routes crossing proposed ending near downtown piece freeway north cloverleaf interchange built late 1950s upgraded extremely short roadway beginning lemon street crossing laurel street ending avenue cedar street extended east old highway cities completed new bridge year bridge opened renumbering legislative designation completed freeway changed route route reflecting interstate designation short piece non freeway extending west state route route followed alignment state highway taken initially connected lemon street later followed north proposed constructed extension west north east added route route waterfront freeway scaled boulevard approved relocation freeway july route interstate system renumbered corresponding legislative changes project construct new northbound interchange rebuilt new span opened august route deleted state highway system soon city constructed parkway replacing maryland street south directly connecting surface road exit list letter measured road based alignment route existed time necessarily reflect current mileage reflects realignment route indicates second realignment refers overlap correction change indicates classified temporary list list definitions segments remain relinquished local control omitted entire route
Interstate 780