US Bridges

N. Causeway Blvd over LA 611-9 & Johnson ST

FairPosted for load

Jefferson Parish, Louisiana · 0.62 MI N of US 90 · Structure no. 022629588900937

Built
1957
68 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
621 ft
11 main spans
Daily traffic
7,021
2021 count
Owner
County
County Highway Agency

About this bridge

N. Causeway Blvd over LA 611-9 & Johnson ST is a steel stringer/multi-beam or girder carrying N. Causeway Blvd over LA 611-9 & Johnson ST in Jefferson Parish, Louisiana. It was built in 1957, so it is 68 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. Its operating status is: posted for load restriction.

It carries about 7,021 vehicles a day, projected to reach 7,723 by 2041. The structure is 621 ft (189.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN. Causeway Blvd
CrossesLA 611-9 & Johnson ST
Location0.62 MI N of US 90
RouteCounty Highway 0
CountyJefferson Parish
StateLouisiana
Coordinates29.97516, -90.156
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment7: Better than present minimum criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length621 ft (189.3 m)
Longest span77 ft (23.5 m)
Deck width28 ft (8.5 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,021 (2021)
Projected traffic7,723 by 2041
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 N. Causeway Blvd over LA 611-9 & Johnson ST built?

It was built in 1957, making it 68 years old in 2025.

What condition is N. Causeway Blvd over LA 611-9 & Johnson ST 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 May 2023.

How much traffic does N. Causeway Blvd over LA 611-9 & Johnson ST carry?

About 7,021 vehicles per day (2021 count).

How long is N. Causeway Blvd over LA 611-9 & Johnson ST?

The structure is 621 ft (189.3 m) long with a longest span of 77 ft (23.5 m) and a deck 28 ft wide.

Who owns N. Causeway Blvd over LA 611-9 & Johnson ST?

It is owned by the County Highway Agency.