US Bridges

I0010 over LA 433

Fair

St. Tammany Parish, Louisiana · 1.6 MI S of US 190 · Structure no. 625204501803102

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
220 ft
4 main spans
Daily traffic
1,600
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over LA 433 is a steel stringer/multi-beam or girder carrying I0010 over LA 433 in St. Tammany Parish, Louisiana. It was built in 1966, so it is 59 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 1,600 vehicles a day, roughly 26% of them trucks, projected to reach 1,760 by 2041. The structure is 220 ft (67.1 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0010
CrossesLA 433
Location1.6 MI S of US 190
RouteInterstate 10
CountySt. Tammany Parish
StateLouisiana
Coordinates30.24816, -89.76343
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span70 ft (21.3 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2021)
Projected traffic1,760 by 2041
Trucks26%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$975,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0010 over LA 433 built?

It was built in 1966, making it 59 years old in 2025.

What condition is I0010 over LA 433 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 August 2023.

How much traffic does I0010 over LA 433 carry?

About 1,600 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0010 over LA 433?

The structure is 220 ft (67.1 m) long with a longest span of 70 ft (21.3 m) and a deck 46 ft wide.

Who owns I0010 over LA 433?

It is owned by the State Highway Agency.