US Bridges

LA0308 over Bayou Valance

Fair

Assumption Parish, Louisiana · 0.20 MI N JCT LA 1011 · Structure no. 610404070604321

Built
1982
43 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
4,729
2021 count
Owner
State
State Highway Agency

About this bridge

LA0308 over Bayou Valance is a concrete slab carrying LA0308 over Bayou Valance in Assumption Parish, Louisiana. It was built in 1982, so it is 43 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 5 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 4,729 vehicles a day, roughly 11% of them trucks, projected to reach 5,201 by 2041. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0308
CrossesBayou Valance
Location0.20 MI N JCT LA 1011
RouteState Highway 308
CountyAssumption Parish
StateLouisiana
Coordinates29.86333, -90.98161
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,729 (2021)
Projected traffic5,201 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 LA0308 over Bayou Valance built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0308 over Bayou Valance 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 December 2023.

How much traffic does LA0308 over Bayou Valance carry?

About 4,729 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0308 over Bayou Valance?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0308 over Bayou Valance?

It is owned by the State Highway Agency.