US Bridges

LA1063 over Natalbany River

Good

Tangipahoa Parish, Louisiana · LA1063 · Structure no. 625308533403601

Built
1962
63 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
182 ft
4 main spans
Daily traffic
1,130
2021 count
Owner
State
State Highway Agency

About this bridge

LA1063 over Natalbany River is a steel stringer/multi-beam or girder carrying LA1063 over Natalbany River in Tangipahoa Parish, Louisiana. It was built in 1962, so it is 63 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 1,130 vehicles a day, roughly 13% of them trucks, projected to reach 1,243 by 2041. The structure is 182 ft (55.5 m) long and 29 ft wide.

CarriesLA1063
CrossesNatalbany River
LocationLA1063
RouteState Highway 1063
Coordinates30.60354, -90.5339
Functional classRural Minor Collector

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 inspectionFebruary 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 alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,130 (2021)
Projected traffic1,243 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1063 over Natalbany River built?

It was built in 1962, making it 63 years old in 2025.

What condition is LA1063 over Natalbany River 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 February 2023.

How much traffic does LA1063 over Natalbany River carry?

About 1,130 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA1063 over Natalbany River?

The structure is 182 ft (55.5 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns LA1063 over Natalbany River?

It is owned by the State Highway Agency.