Louisiana Highway 140

Louisiana Highway 140
Old Bonita Road
Route of LA 140 highlighted in red
Route information
Maintained by Louisiana DOTD
Length	14.758 mi[1] (23.751 km)
Existed	1955 renumbering–present
Major junctions
West end	US 425 in Log Cabin
East end	US 165 / LA 599 in Bonita
Location
Country	United States
State	Louisiana
Parishes	Morehouse
Highway system
Louisiana State Highway System Interstate US State Scenic
← LA 139 → LA 141
← SR C-1485 C-1486 → SR C-1487

Louisiana Highway 140 (LA 140) is a state highway located in Morehouse Parish, Louisiana. It runs 14.76 miles (23.75 km) in an east–west direction from U.S. Highway 425 (US 425) in Log Cabin to a junction with U.S. Highway 165 (US 165) and LA 599 in Bonita.

The route provides the most direct connection between Bastrop, the parish seat, and northbound US 165, which heads north from Bonita toward the Arkansas state line. US 165 takes a more indirect routing, heading eastward out of Bastrop before turning north at Mer Rouge. Providing both a north–south and an east–west function, the signage for LA 140 does not carry directional banners. The route is known locally as Old Bonita Road.