I0012 over I-12 Ent Ramp

Good

Livingston Parish, Louisiana · 0.1 M W of LA 3002 · Structure no. 623204540201836

Built: 1970; 55 years old
Condition: Good; inspected February 2024
Type: Culvert; Concrete
Length: 32 ft; 3 main spans
Daily traffic: 31,285; 2021 count
Owner: State; State Highway Agency

About this bridge

I0012 over I-12 Ent Ramp is a concrete culvert carrying I0012 over I-12 Ent Ramp in Livingston 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 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 31,285 vehicles a day, roughly 26% of them trucks, projected to reach 34,413 by 2041. The structure is 32 ft (9.8 m) long and 66 ft wide.

Location

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CarriesI0012

CrossesI-12 Ent Ramp

Location0.1 M W of LA 3002

RouteInterstate 12

CountyLivingston Parish

StateLouisiana

Coordinates30.45523, -90.95795

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionFebruary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than 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 rating44 US tons

Inventory rating34 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans3

Design loadHS 20

Structure length32 ft (9.8 m)

Longest span10 ft (3 m)

Deck width66 ft (20.1 m)

Roadway width25 ft (7.6 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,285 (2021)

Projected traffic34,413 by 2041

Trucks26%

Lanes on structure1

Traffic directionOne-way traffic

CarriesHighway

CrossesWaterway

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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was I0012 over I-12 Ent Ramp built?

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

What condition is I0012 over I-12 Ent Ramp 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 February 2024.

How much traffic does I0012 over I-12 Ent Ramp carry?

About 31,285 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0012 over I-12 Ent Ramp?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 66 ft wide.

Who owns I0012 over I-12 Ent Ramp?

It is owned by the State Highway Agency.