US Bridges

I0055 over Yellow Water

Good

Tangipahoa Parish, Louisiana · I0055 · Structure no. 625304529017191

Built
1968
57 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
242 ft
4 main spans
Daily traffic
36,311
2021 count
Owner
State
State Highway Agency

About this bridge

I0055 over Yellow Water is a prestressed concrete stringer/multi-beam or girder carrying I0055 over Yellow Water in Tangipahoa Parish, Louisiana. It was built in 1968, so it is 57 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 36,311 vehicles a day, roughly 26% of them trucks, projected to reach 39,942 by 2041. The structure is 242 ft (73.8 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0055
CrossesYellow Water
LocationI0055
RouteInterstate 55
CountyTangipahoa Parish
StateLouisiana
Coordinates30.50752, -90.50354
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating96 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,311 (2021)
Projected traffic39,942 by 2041
Trucks26%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I0055 over Yellow Water built?

It was built in 1968, making it 57 years old in 2025.

What condition is I0055 over Yellow Water 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 January 2025.

How much traffic does I0055 over Yellow Water carry?

About 36,311 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0055 over Yellow Water?

The structure is 242 ft (73.8 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns I0055 over Yellow Water?

It is owned by the State Highway Agency.