US Bridges

US0090 over On Ramp

Good

Orleans Parish, Louisiana · 1.77 MI South of Miss. Ri · Structure no. 023602830804186

Built
1989
36 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
360 ft
18 main spans
Daily traffic
46,928
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over On Ramp is a concrete slab carrying US0090 over On Ramp in Orleans Parish, Louisiana. It was built in 1989, so it is 36 years old, younger 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 46,928 vehicles a day, roughly 25% of them trucks, projected to reach 51,620 by 2041. The structure is 360 ft (109.7 m) long and 47 ft wide.

CarriesUS0090
CrossesOn Ramp
Location1.77 MI South of Miss. Ri
RouteU.S. Route 90
Coordinates29.93171, -90.0367
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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20
Structure length360 ft (109.7 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.3 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,928 (2021)
Projected traffic51,620 by 2041
Trucks25%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US0090 over On Ramp built?

It was built in 1989, making it 36 years old in 2025.

What condition is US0090 over On 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 US0090 over On Ramp carry?

About 46,928 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is US0090 over On Ramp?

The structure is 360 ft (109.7 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns US0090 over On Ramp?

It is owned by the State Highway Agency.