US Bridges

I0012 Ramp B over US 190

Fair

St. Tammany Parish, Louisiana · 2.6 M W of LA 59 · Structure no. 625204540410067

Built
1976
49 years old
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel
Length
415 ft
5 main spans
Daily traffic
9,838
2021 count
Owner
State
State Highway Agency

About this bridge

I0012 Ramp B over US 190 is a steel girder and floorbeam system carrying I0012 Ramp B over US 190 in St. Tammany Parish, Louisiana. It was built in 1976, so it is 49 years old, older 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 9,838 vehicles a day, roughly 26% of them trucks, projected to reach 10,821 by 2041. The structure is 415 ft (126.5 m) long and 28 ft wide.

Location

Open in Google Maps
CarriesI0012 Ramp B
CrossesUS 190
Location2.6 M W of LA 59
RouteInterstate 12
CountySt. Tammany Parish
StateLouisiana
Coordinates30.42744, -90.0856
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length415 ft (126.5 m)
Longest span122 ft (37.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,838 (2021)
Projected traffic10,821 by 2041
Trucks26%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0012 Ramp B over US 190 built?

It was built in 1976, making it 49 years old in 2025.

What condition is I0012 Ramp B over US 190 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 August 2023.

How much traffic does I0012 Ramp B over US 190 carry?

About 9,838 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0012 Ramp B over US 190?

The structure is 415 ft (126.5 m) long with a longest span of 122 ft (37.2 m) and a deck 28 ft wide.

Who owns I0012 Ramp B over US 190?

It is owned by the State Highway Agency.