US Bridges

US0090 over Ramp I

Good

St. Mary Parish, Louisiana · 7.03 MI W of LA 662 · Structure no. 035104240533928

Built
1984
41 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
463 ft
1 main span
Daily traffic
24,384
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over Ramp I is a steel stringer/multi-beam or girder carrying US0090 over Ramp I in St. Mary Parish, Louisiana. It was built in 1984, so it is 41 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 24,384 vehicles a day, roughly 14% of them trucks, projected to reach 26,822 by 2041. The structure is 463 ft (141.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0090
CrossesRamp I
Location7.03 MI W of LA 662
RouteU.S. Route 90
Coordinates29.70144, -91.1961
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20
Structure length463 ft (141.1 m)
Longest span130 ft (39.6 m)
Deck width32 ft (9.9 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,384 (2021)
Projected traffic26,822 by 2041
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
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 Ramp I built?

It was built in 1984, making it 41 years old in 2025.

What condition is US0090 over Ramp I 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 March 2024.

How much traffic does US0090 over Ramp I carry?

About 24,384 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0090 over Ramp I?

The structure is 463 ft (141.1 m) long with a longest span of 130 ft (39.6 m) and a deck 32 ft wide.

Who owns US0090 over Ramp I?

It is owned by the State Highway Agency.