US Bridges

LA0023 over Bayou Barriere

Fair

Plaquemines Parish, Louisiana · .3 MI South of LA 428 · Structure no. 023800620201142

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
3 main spans
Daily traffic
29,088
2021 count
Owner
State
State Highway Agency

About this bridge

LA0023 over Bayou Barriere is a steel stringer/multi-beam or girder carrying LA0023 over Bayou Barriere in Plaquemines Parish, Louisiana. It was built in 1955, so it is 70 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 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 29,088 vehicles a day, roughly 10% of them trucks, projected to reach 31,996 by 2041. The structure is 90 ft (27.4 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesLA0023
CrossesBayou Barriere
Location.3 MI South of LA 428
RouteState Highway 23
CountyPlaquemines Parish
StateLouisiana
Coordinates29.86756, -90.003
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,088 (2021)
Projected traffic31,996 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$456,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0023 over Bayou Barriere built?

It was built in 1955, making it 70 years old in 2025.

What condition is LA0023 over Bayou Barriere 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 April 2023.

How much traffic does LA0023 over Bayou Barriere carry?

About 29,088 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0023 over Bayou Barriere?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns LA0023 over Bayou Barriere?

It is owned by the State Highway Agency.