US Bridges

I0055 over Cools Creek

Fair

Tangipahoa Parish, Louisiana · I0055 · Structure no. 625304529048192

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
17,665
2021 count
Owner
State
State Highway Agency

About this bridge

I0055 over Cools Creek is a concrete slab carrying I0055 over Cools 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 100 ft (30.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0055
CrossesCools Creek
LocationI0055
RouteInterstate 55
Coordinates30.95372, -90.522
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.2 m)
Roadway width40 ft (12.2 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 Cools Creek built?

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

What condition is I0055 over Cools 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 January 2025.

How much traffic does I0055 over Cools Creek carry?

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

How long is I0055 over Cools Creek?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns I0055 over Cools Creek?

It is owned by the State Highway Agency.