US Bridges

US0090 over Offramp from 90 to 311

Good

Terrebonne Parish, Louisiana · 0.12 MI W of LA 311 · Structure no. 025504240714928

Built
1987
38 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
385 ft
7 main spans
Daily traffic
12,192
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over Offramp from 90 to 311 is a prestressed concrete stringer/multi-beam or girder carrying US0090 over Offramp from 90 to 311 in Terrebonne Parish, Louisiana. It was built in 1987, so it is 38 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 12,192 vehicles a day, roughly 18% of them trucks, projected to reach 13,411 by 2041. The structure is 385 ft (117.3 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0090
CrossesOfframp from 90 to 311
Location0.12 MI W of LA 311
RouteU.S. Route 90
Coordinates29.68184, -90.8128
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7 (+3 approach)
Design loadHS 20
Structure length385 ft (117.3 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,192 (2021)
Projected traffic13,411 by 2041
Trucks18%
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 Offramp from 90 to 311 built?

It was built in 1987, making it 38 years old in 2025.

What condition is US0090 over Offramp from 90 to 311 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 April 2023.

How much traffic does US0090 over Offramp from 90 to 311 carry?

About 12,192 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US0090 over Offramp from 90 to 311?

The structure is 385 ft (117.3 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns US0090 over Offramp from 90 to 311?

It is owned by the State Highway Agency.