I0055 over Terrys Creek

Fair

Tangipahoa Parish, Louisiana · 2.5 MI S. of State Line · Structure no. 625304529049052

Built: 1966; 59 years old
Condition: Fair; inspected December 2024
Type: Slab; Concrete
Length: 240 ft; 12 main spans
Daily traffic: 17,665; 2021 count
Owner: State; State Highway Agency

About this bridge

I0055 over Terrys Creek is a concrete slab carrying I0055 over Terrys Creek in Tangipahoa 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 17,665 vehicles a day, roughly 25% of them trucks, projected to reach 19,431 by 2041. The structure is 240 ft (73.2 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0055

CrossesTerrys Creek

Location2.5 MI S. of State Line

RouteInterstate 55

CountyTangipahoa Parish

StateLouisiana

Coordinates30.96559, -90.5163

Functional classRural 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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionDecember 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation6: Equal to present minimum criteria

Deck geometry3: Basically intolerable, requiring high priority of corrective action

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating42.9 US tons

Inventory rating33.2 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans12

Design loadHS 20

Structure length240 ft (73.2 m)

Longest span20 ft (6.1 m)

Deck width34 ft (10.3 m)

Roadway width28 ft (8.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,665 (2021)

Projected traffic19,431 by 2041

Trucks25%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesWaterway

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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was I0055 over Terrys Creek built?

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

What condition is I0055 over Terrys 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 December 2024.

How much traffic does I0055 over Terrys Creek carry?

About 17,665 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I0055 over Terrys Creek?

The structure is 240 ft (73.2 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns I0055 over Terrys Creek?

It is owned by the State Highway Agency.