LA0580
Carrying LA0580 over JONES BAYOU
4.6 MI EAST OF LA 877, East Carroll, Louisiana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
LA0580 in East Carroll, Louisiana sits above 1% of rated Louisiana bridges on inventory load rating (0 t), while its 1958 build year is earlier than 87% of East Carroll's recorded-year cohort (55 bridges).
LA0580 in East Carroll, Louisiana is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1958, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure LA:051808180108121
INTERSTATE-ERA · TIMBER · MULTI-SPAN · SUB-LED · LOCAL-ADT · TRACE-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- TIMBER Wood or timber
- MULTI-SPAN 3 spans
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- TRACE-LOAD Trace load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: LA0580
The LA0580 bridge in East Carroll, Louisiana carries LA0580 over JONES BAYOU. It was built in 1958, making it 68 years old today. The structure is built primarily of wood or timber and spans 3 sections, stretching 17.4 meters (57 feet) end to end. Daily traffic averages 212 vehicles, placing it in the lower-traffic tier of Louisiana bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How LA0580 compares
Age against the county: built in 1958, earlier than 48 of East Carroll's 55 bridges with a recorded construction year (87%), against a county median build year of 1983. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Louisiana bridges with a recorded inventory load rating (12,682 of 12,698 rated).
LA0580 vs every rated Louisiana bridge
Inventory load rating (metric tons), FHWA NBI, this state
0 Top 99% higher than 1% of 12,682 bridges
rated Louisiana bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
East Carroll inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 55 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1958
- Material
- Wood or Timber
- Number of Spans
- 3
- Structure Length
- 17.4 m (57 ft)
- Deck Width
- 7.9 m (26 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 212 vehicles/day
- Structure Number
- 051808180108121
Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
LA0580 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare LA0580 against other structures in East Carroll and across Louisiana. Louisiana bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for LA0580?
LA0580 in East Carroll, Louisiana has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is LA0580 inspected?
LA0580's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 212 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LA0580 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for LA0580?
LA0580 has an NBI inventory load rating of 0.0 metric tons.
Who is responsible for maintaining LA0580?
LA0580 is owned and maintained by State Highway Agency.
How old is LA0580 and does age affect safety?
LA0580 was built in 1958, making it 68 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.