US Bridges

LA0040 over Sweetwater Creek

Fair

Tangipahoa Parish, Louisiana · 2.8 M W of LA 1062 · Structure no. 625304150303541

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
115 ft
6 main spans
Daily traffic
4,748
2021 count
Owner
State
State Highway Agency

About this bridge

LA0040 over Sweetwater Creek is a concrete slab carrying LA0040 over Sweetwater Creek in Tangipahoa Parish, Louisiana. It was built in 1970, so it is 55 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 4,748 vehicles a day, roughly 12% of them trucks, projected to reach 5,222 by 2041. The structure is 115 ft (35.1 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesLA0040
CrossesSweetwater Creek
Location2.8 M W of LA 1062
RouteState Highway 40
CountyTangipahoa Parish
StateLouisiana
Coordinates30.63586, -90.4502
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,748 (2021)
Projected traffic5,222 by 2041
Trucks12%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0040 over Sweetwater Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is LA0040 over Sweetwater Creek 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 April 2023.

How much traffic does LA0040 over Sweetwater Creek carry?

About 4,748 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0040 over Sweetwater Creek?

The structure is 115 ft (35.1 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0040 over Sweetwater Creek?

It is owned by the State Highway Agency.