US Bridges

LA0039 over Japonica St.

Fair

Orleans Parish, Louisiana · 5.2 MI W of LA 47 · Structure no. 023600463102222

Built
1957
68 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
605 ft
9 main spans
Daily traffic
36,993
2021 count
Owner
State
State Highway Agency

About this bridge

LA0039 over Japonica St. is a steel stringer/multi-beam or girder carrying LA0039 over Japonica St. in Orleans 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.

It carries about 36,993 vehicles a day, roughly 10% of them trucks, projected to reach 40,692 by 2041. The structure is 605 ft (184.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0039
CrossesJaponica St.
Location5.2 MI W of LA 47
RouteState Highway 39
CountyOrleans Parish
StateLouisiana
Coordinates29.96927, -90.02736
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans9 (+7 approach)
Design loadHS 20
Structure length605 ft (184.4 m)
Longest span75 ft (22.9 m)
Deck width30 ft (9 m)
Roadway width26 ft (8 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic36,993 (2021)
Projected traffic40,692 by 2041
Trucks10%
Lanes on structure2
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0039 over Japonica St. built?

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

What condition is LA0039 over Japonica 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 November 2023.

How much traffic does LA0039 over Japonica St. carry?

About 36,993 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0039 over Japonica St.?

The structure is 605 ft (184.4 m) long with a longest span of 75 ft (22.9 m) and a deck 30 ft wide.

Who owns LA0039 over Japonica St.?

It is owned by the State Highway Agency.