US Bridges

LA0022 over Natalbany River

Fair

Tangipahoa Parish, Louisiana · 0.07 Mi. East of LA 42 · Structure no. 625302610300001

Built
1956
69 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
500 ft
11 main spans
Daily traffic
9,490
2021 count
Owner
State
State Highway Agency

About this bridge

LA0022 over Natalbany River is a steel stringer/multi-beam or girder carrying LA0022 over Natalbany River in Tangipahoa Parish, Louisiana. It was built in 1956, so it is 69 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 9,490 vehicles a day, roughly 9% of them trucks, projected to reach 10,439 by 2041. The structure is 500 ft (152.4 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0022
CrossesNatalbany River
Location0.07 Mi. East of LA 42
RouteState Highway 22
CountyTangipahoa Parish
StateLouisiana
Coordinates30.43113, -90.54735
Functional classUrban 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.
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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length500 ft (152.4 m)
Longest span60 ft (18.3 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,490 (2021)
Projected traffic10,439 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0022 over Natalbany River built?

It was built in 1956, making it 69 years old in 2025.

What condition is LA0022 over Natalbany River 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 March 2023.

How much traffic does LA0022 over Natalbany River carry?

About 9,490 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA0022 over Natalbany River?

The structure is 500 ft (152.4 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.

Who owns LA0022 over Natalbany River?

It is owned by the State Highway Agency.