US Bridges

US0090-B over Ramp MC-4

Fair

Jefferson Parish, Louisiana · 2.2 MI East of LA 23 · Structure no. 022602830903615

Built
1984
41 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
557 ft
2 main spans
Daily traffic
15,955
2021 count
Owner
State
State Highway Agency

About this bridge

US0090-B over Ramp MC-4 is a concrete continuous box beam or girders - multiple carrying US0090-B over Ramp MC-4 in Jefferson 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 fair condition with a lowest component rating of 5 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 15,955 vehicles a day, roughly 25% of them trucks, projected to reach 17,550 by 2041. The structure is 557 ft (169.8 m) long and 23 ft wide.

Location

Open in Google Maps
CarriesUS0090-B
CrossesRamp MC-4
Location2.2 MI East of LA 23
RouteU.S. Route 90
CountyJefferson Parish
StateLouisiana
Coordinates29.89668, -90.08624
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+7 approach)
Design loadHS 20
Structure length557 ft (169.8 m)
Longest span146 ft (44.5 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,955 (2021)
Projected traffic17,550 by 2041
Trucks25%
Lanes on structure1
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was US0090-B over Ramp MC-4 built?

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

What condition is US0090-B over Ramp MC-4 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 October 2023.

How much traffic does US0090-B over Ramp MC-4 carry?

About 15,955 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is US0090-B over Ramp MC-4?

The structure is 557 ft (169.8 m) long with a longest span of 146 ft (44.5 m) and a deck 23 ft wide.

Who owns US0090-B over Ramp MC-4?

It is owned by the State Highway Agency.