US Bridges

LA0323 over Bayou Teche

Good

St. Mary Parish, Louisiana · 0.2 MI W. of LA 87 · Structure no. 035100000030448

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Movable - Swing
Steel
Length
323 ft
2 main spans
Daily traffic
170
2021 count
Owner
State
State Highway Agency

About this bridge

LA0323 over Bayou Teche is a steel movable - swing carrying LA0323 over Bayou Teche in St. Mary Parish, Louisiana. It was built in 2022, so it is 3 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 170 vehicles a day, roughly 9% of them trucks, projected to reach 187 by 2041. The structure is 323 ft (98.5 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesLA0323
CrossesBayou Teche
Location0.2 MI W. of LA 87
RouteState Highway 323
CountySt. Mary Parish
StateLouisiana
Coordinates29.84067, -91.45469
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+9 approach)
Design loadGreater than HL 93
Structure length323 ft (98.5 m)
Longest span78 ft (23.8 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic170 (2021)
Projected traffic187 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0323 over Bayou Teche built?

It was built in 2022, making it 3 years old in 2025.

What condition is LA0323 over Bayou Teche in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does LA0323 over Bayou Teche carry?

About 170 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA0323 over Bayou Teche?

The structure is 323 ft (98.5 m) long with a longest span of 78 ft (23.8 m) and a deck 34 ft wide.

Who owns LA0323 over Bayou Teche?

It is owned by the State Highway Agency.