US Bridges

LA0408 over Comite River

Fair

East Baton Rouge Parish, Louisiana · 2.6 M E of LA 67&LA 408 · Structure no. 611702550203102

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
330 ft
4 main spans
Daily traffic
19,515
2021 count
Owner
State
State Highway Agency

About this bridge

LA0408 over Comite River is a prestressed concrete stringer/multi-beam or girder carrying LA0408 over Comite River in East Baton Rouge Parish, Louisiana. It was built in 1984, so it is 41 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 19,515 vehicles a day, roughly 9% of them trucks, projected to reach 21,466 by 2041. The structure is 330 ft (100.6 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0408
CrossesComite River
Location2.6 M E of LA 67&LA 408
RouteState Highway 408
Coordinates30.53088, -91.09425
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating24.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length330 ft (100.6 m)
Longest span83 ft (25.3 m)
Deck width47 ft (14.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,515 (2021)
Projected traffic21,466 by 2041
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0408 over Comite River built?

It was built in 1984, making it 41 years old in 2025.

What condition is LA0408 over Comite River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does LA0408 over Comite River carry?

About 19,515 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA0408 over Comite River?

The structure is 330 ft (100.6 m) long with a longest span of 83 ft (25.3 m) and a deck 47 ft wide.

Who owns LA0408 over Comite River?

It is owned by the State Highway Agency.