US Bridges

US0425 over Lafourche Lake

Fair

Morehouse Parish, Louisiana · 3.7 MI South of LA 133 · Structure no. 053400710300001

Built
1971
54 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
700 ft
10 main spans
Daily traffic
1,954
2021 count
Owner
State
State Highway Agency

About this bridge

US0425 over Lafourche Lake is a prestressed concrete stringer/multi-beam or girder carrying US0425 over Lafourche Lake in Morehouse Parish, Louisiana. It was built in 1971, so it is 54 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 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 1,954 vehicles a day, roughly 16% of them trucks, projected to reach 2,149 by 2041. The structure is 700 ft (213.4 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesUS0425
CrossesLafourche Lake
Location3.7 MI South of LA 133
RouteU.S. Route 425
CountyMorehouse Parish
StateLouisiana
Coordinates32.5587, -91.75971
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating87 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length700 ft (213.4 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,954 (2021)
Projected traffic2,149 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 US0425 over Lafourche Lake built?

It was built in 1971, making it 54 years old in 2025.

What condition is US0425 over Lafourche Lake 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 May 2024.

How much traffic does US0425 over Lafourche Lake carry?

About 1,954 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is US0425 over Lafourche Lake?

The structure is 700 ft (213.4 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns US0425 over Lafourche Lake?

It is owned by the State Highway Agency.