US Bridges

LA0040 over Bogue Falaya Relief

Fair

St. Tammany Parish, Louisiana · 0.8 M E of LA 25 · Structure no. 625202690801031

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
58 ft
3 main spans
Daily traffic
3,689
2021 count
Owner
State
State Highway Agency

About this bridge

LA0040 over Bogue Falaya Relief is a concrete slab carrying LA0040 over Bogue Falaya Relief in St. Tammany Parish, Louisiana. It was built in 1978, so it is 47 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 3,689 vehicles a day, roughly 12% of them trucks, projected to reach 4,057 by 2041. The structure is 58 ft (17.7 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0040
CrossesBogue Falaya Relief
Location0.8 M E of LA 25
RouteState Highway 40
CountySt. Tammany Parish
StateLouisiana
Coordinates30.62854, -90.1714
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
Deck7 GoodSome minor problems.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,689 (2021)
Projected traffic4,057 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed98.8 mi (159 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 LA0040 over Bogue Falaya Relief built?

It was built in 1978, making it 47 years old in 2025.

What condition is LA0040 over Bogue Falaya Relief 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 November 2023.

How much traffic does LA0040 over Bogue Falaya Relief carry?

About 3,689 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0040 over Bogue Falaya Relief?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 43 ft wide.

Who owns LA0040 over Bogue Falaya Relief?

It is owned by the State Highway Agency.