US Bridges

I0010 over I-59 NB Lane

Fair

St. Tammany Parish, Louisiana · I0010 · Structure no. 625204501807401

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel
Length
235 ft
3 main spans
Daily traffic
1,600
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over I-59 NB Lane is a steel girder and floorbeam system carrying I0010 over I-59 NB Lane in St. Tammany 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 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 235 ft (71.6 m) long and 33 ft wide.

Location

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CarriesI0010
CrossesI-59 NB Lane
LocationI0010
RouteInterstate 10
CountySt. Tammany Parish
StateLouisiana
Coordinates30.30388, -89.7407
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.
Substructure7 GoodSome minor problems.
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 rating61 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length235 ft (71.6 m)
Longest span90 ft (27.4 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2021)
Projected traffic1,760 by 2041
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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$1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0010 over I-59 NB Lane built?

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

What condition is I0010 over I-59 NB Lane 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 I-59 NB Lane carry?

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

How long is I0010 over I-59 NB Lane?

The structure is 235 ft (71.6 m) long with a longest span of 90 ft (27.4 m) and a deck 33 ft wide.

Who owns I0010 over I-59 NB Lane?

It is owned by the State Highway Agency.