US Bridges

US0090 over LA 329 & Ldrr

Good

Iberia Parish, Louisiana · 2.38 MI W of LA 83 · Structure no. 032304240408432

Built
1969
56 years old, rebuilt 2006
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,400 ft
20 main spans
Daily traffic
10,090
2021 count
Owner
State
State Highway Agency

About this bridge

US0090 over LA 329 & Ldrr is a prestressed concrete stringer/multi-beam or girder carrying US0090 over LA 329 & Ldrr in Iberia Parish, Louisiana. It was built in 1969 and reconstructed in 2006, so it is 56 years old, older 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 10,090 vehicles a day, roughly 10% of them trucks, projected to reach 11,099 by 2041. The structure is 1,400 ft (426.7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0090
CrossesLA 329 & Ldrr
Location2.38 MI W of LA 83
RouteU.S. Route 90
CountyIberia Parish
StateLouisiana
Coordinates29.97818, -91.84996
Functional classUrban Other Principal Arterial

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans20
Design loadHS 20
Structure length1,400 ft (426.7 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,090 (2021)
Projected traffic11,099 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$5.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was US0090 over LA 329 & Ldrr built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2006.

What condition is US0090 over LA 329 & Ldrr 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 March 2023.

How much traffic does US0090 over LA 329 & Ldrr carry?

About 10,090 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is US0090 over LA 329 & Ldrr?

The structure is 1,400 ft (426.7 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns US0090 over LA 329 & Ldrr?

It is owned by the State Highway Agency.