US Bridges

LA1081 over L.Bogue Falaya

Good

St. Tammany Parish, Louisiana · LA1081 · Structure no. 625208521502821

Built
1960
65 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
180 ft
9 main spans
Daily traffic
2,000
2021 count
Owner
State
State Highway Agency

About this bridge

LA1081 over L.Bogue Falaya is a concrete slab carrying LA1081 over L.Bogue Falaya in St. Tammany Parish, Louisiana. It was built in 1960, so it is 65 years old, older 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 2,000 vehicles a day, roughly 13% of them trucks, projected to reach 2,200 by 2041. The structure is 180 ft (54.9 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesLA1081
CrossesL.Bogue Falaya
LocationLA1081
RouteState Highway 1081
CountySt. Tammany Parish
StateLouisiana
Coordinates30.5538, -90.0573
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 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 rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2021)
Projected traffic2,200 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$819,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1081 over L.Bogue Falaya built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA1081 over L.Bogue Falaya 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 October 2023.

How much traffic does LA1081 over L.Bogue Falaya carry?

About 2,000 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA1081 over L.Bogue Falaya?

The structure is 180 ft (54.9 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA1081 over L.Bogue Falaya?

It is owned by the State Highway Agency.