US Bridges

I0012 over US 11

Good

St. Tammany Parish, Louisiana · I0012 · Structure no. 625204540430682

Built
1970
55 years old, rebuilt 2013
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
504 ft
7 main spans
Daily traffic
29,236
2021 count
Owner
State
State Highway Agency

About this bridge

I0012 over US 11 is a steel stringer/multi-beam or girder carrying I0012 over US 11 in St. Tammany Parish, Louisiana. It was built in 1970 and reconstructed in 2013, 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 29,236 vehicles a day, roughly 26% of them trucks, projected to reach 32,159 by 2041. The structure is 504 ft (153.6 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI0012
CrossesUS 11
LocationI0012
RouteInterstate 12
CountySt. Tammany Parish
StateLouisiana
Coordinates30.31035, -89.7695
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length504 ft (153.6 m)
Longest span134 ft (40.8 m)
Deck width73 ft (22.1 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,236 (2021)
Projected traffic32,159 by 2041
Trucks26%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway, waterway and railroad
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 11 built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2013.

What condition is I0012 over US 11 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 September 2023.

How much traffic does I0012 over US 11 carry?

About 29,236 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0012 over US 11?

The structure is 504 ft (153.6 m) long with a longest span of 134 ft (40.8 m) and a deck 73 ft wide.

Who owns I0012 over US 11?

It is owned by the State Highway Agency.