Louisiana Highway 408
|Maintained by Louisiana DOTD|
|Length:||13.04 mi (20.99 km)|
|West end:||Southern University in Baton Rouge|
| US 61 in Baton Rouge
I‑110 in Baton Rouge
|East end:||LA 37 / LA 64 in Greenwell Springs|
|Parishes:||East Baton Rouge|
Louisiana Highway 408 (LA 408) is a state highway in Louisiana that serves East Baton Rouge Parish. It spans 13.04 miles (20.99 km) in a west to east direction. It is known locally as Harding Boulevard and Hooper Road.
From the west, LA 408 begins along Harding Boulevard at the entrance of Southern University in Baton Rouge, one mile (1.6 km) west of US 61 (Scenic Highway). It crosses a railroad overpass and heads eastward toward US 61 and I-110 (Exit 6), passing to the south of Baton Rouge Metropolitan Airport. LA 408 becomes Hooper Road east of a junction with LA 67 and then crosses the Comite River. It then crosses LA 410 (Blackwater Road), LA 946 (Joor Road), and LA 3034 (Sullivan Road). It comes to an end just west of the Amite River at a junction with LA 37 and LA 64 (Greenwell Springs Road).
From its western terminus, LA 408 begins as an undivided, two lane highway before dividing and expanding to four lanes before a railroad overpass on the eastern edge of Southern University. It again becomes an undivided, two lane highway about a half mile past LA 410 (Blackwater Road). It stays that way for the remainder of the route with the exceptions of brief changes near LA 946 (Joor Road) (undivided, five lane highway (with a middle turning lane) and LA 3034 (Sullivan Road) (undivided, three lane highway (with a middle turning lane).
The entire highway is in East Baton Rouge Parish.
|Baton Rouge||0.00||0.00||Southern University entrance||Western terminus|
|1.0||1.6||US 61 (Scenic Highway)|
|2.0||3.2||I‑110||Exit 6 (I-110)|
|3.0||4.8||LA 67 (Plank Road)|
|6.7||10.8||LA 410 north (Blackwater Road)|
|8.9||14.3||LA 946 south (Joor Road)|
|Greenwell Springs||10.0||16.1||LA 3034 east (Sullivan Road)|
|13.04||20.99||LA 37 / LA 64 (Greenwell Springs Road)||Eastern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi