US Bridges

US0051 over I-12

Fair

Tangipahoa Parish, Louisiana · 0.3 MI No I-55 · Structure no. 625300170400771

Built
1995
30 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
4 main spans
Daily traffic
19,612
2021 count
Owner
State
State Highway Agency

About this bridge

US0051 over I-12 is a prestressed concrete stringer/multi-beam or girder carrying US0051 over I-12 in Tangipahoa Parish, Louisiana. It was built in 1995, so it is 30 years old, younger 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 19,612 vehicles a day, roughly 6% of them trucks, projected to reach 21,573 by 2041. The structure is 220 ft (67.1 m) long and 85 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesUS0051
CrossesI-12
Location0.3 MI No I-55
RouteU.S. Route 51
CountyTangipahoa Parish
StateLouisiana
Coordinates30.47869, -90.4827
Functional classUrban Other Principal Arterial

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span70 ft (21.3 m)
Deck width85 ft (25.8 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,612 (2021)
Projected traffic21,573 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US0051 over I-12 built?

It was built in 1995, making it 30 years old in 2025.

What condition is US0051 over I-12 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 March 2023.

How much traffic does US0051 over I-12 carry?

About 19,612 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is US0051 over I-12?

The structure is 220 ft (67.1 m) long with a longest span of 70 ft (21.3 m) and a deck 85 ft wide.

Who owns US0051 over I-12?

It is owned by the State Highway Agency.