US Bridges

I0012 over US 61/AIRLINE

Fair

East Baton Rouge Parish, Louisiana · I0012 · Structure no. 611704540102781

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
476 ft
10 main spans
Daily traffic
28,013
2021 count
Owner
State
State Highway Agency

About this bridge

I0012 over US 61/AIRLINE is a steel stringer/multi-beam or girder carrying I0012 over US 61/AIRLINE in East Baton Rouge Parish, Louisiana. It was built in 1986, so it is 39 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 5 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 28,013 vehicles a day, roughly 9% of them trucks, projected to reach 30,814 by 2041. The structure is 476 ft (145.1 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI0012
CrossesUS 61/AIRLINE
LocationI0012
RouteInterstate 12
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.42347, -91.07565
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length476 ft (145.1 m)
Longest span54 ft (16.5 m)
Deck width70 ft (21.3 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,013 (2021)
Projected traffic30,814 by 2041
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0012 over US 61/AIRLINE built?

It was built in 1986, making it 39 years old in 2025.

What condition is I0012 over US 61/AIRLINE 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 April 2024.

How much traffic does I0012 over US 61/AIRLINE carry?

About 28,013 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I0012 over US 61/AIRLINE?

The structure is 476 ft (145.1 m) long with a longest span of 54 ft (16.5 m) and a deck 70 ft wide.

Who owns I0012 over US 61/AIRLINE?

It is owned by the State Highway Agency.