Louisiana Highway 644 (LA 644) is a state highway in Louisiana which serves St. James Parish. It spans 1.76 miles (2.83 km) in a west to east direction and is known locally as N. Spruce Street.
LA 644 runs eastward from an intersection with LA 20 in Vacherie. After little more than a mile, it turns southward and becomes N. Spruce Street. It ends at an intersection with LA 643 shortly thereafter.
It is an undivided, two-lane highway for its entirety.
The entire highway is in Vacherie, St. James Parish.
Route map: Google / Bing