US Bridges

LA0133 over Bayou Lafourche

Fair

Caldwell Parish, Louisiana · 2.6 MI North of LA 4 · Structure no. 581101660102601

Built
1949
76 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
362 ft
9 main spans
Daily traffic
1,415
2021 count
Owner
State
State Highway Agency

About this bridge

LA0133 over Bayou Lafourche is a steel stringer/multi-beam or girder carrying LA0133 over Bayou Lafourche in Caldwell Parish, Louisiana. It was built in 1949, so it is 76 years old, older 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 1,415 vehicles a day, roughly 21% of them trucks, projected to reach 1,556 by 2041. The structure is 362 ft (110.3 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLA0133
CrossesBayou Lafourche
Location2.6 MI North of LA 4
RouteState Highway 133
CountyCaldwell Parish
StateLouisiana
Coordinates32.14582, -92.0306
Functional classRural Major 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 inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans9
Design loadH 15
Structure length362 ft (110.3 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,415 (2021)
Projected traffic1,556 by 2041
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 LA0133 over Bayou Lafourche built?

It was built in 1949, making it 76 years old in 2025.

What condition is LA0133 over Bayou Lafourche 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 June 2023.

How much traffic does LA0133 over Bayou Lafourche carry?

About 1,415 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is LA0133 over Bayou Lafourche?

The structure is 362 ft (110.3 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns LA0133 over Bayou Lafourche?

It is owned by the State Highway Agency.