LA0506
Carrying LA0506 over CASTOR RELIEF
7.3 MI WEST OF US 165, Caldwell, Louisiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: LA0506
The LA0506 bridge in Caldwell, Louisiana carries LA0506 over CASTOR RELIEF. It was built in 1931, making it 95 years old today. The structure is built primarily of wood or timber and spans 3 sections, stretching 18.0 meters (59 feet) end to end. Daily traffic averages 306 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 0/9, superstructure at 0/9, substructure at 0/9. The weakest component sits in critical 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. Its NBI inventory load rating is 11.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How LA0506 compares
Live comparison across Louisiana.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1931
- Material
- Wood or Timber
- Number of Spans
- 3
- Structure Length
- 18.0 m (59 ft)
- Deck Width
- 6.6 m (22 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 306 vehicles/day
- Structure Number
- 581103450300411
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates critical at 0/9, severe deterioration that needs urgent attention.
- • At 0/9, the superstructure (beams and supports above the deck) is in critical shape, with severe wear requiring urgent action.
- • At 0/9, the substructure (piers and abutments) is in critical shape, with severe wear requiring urgent action.
How to read this record
LA0506 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 LA0506 against other structures in Caldwell 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 LA0506?
LA0506 in Caldwell, Louisiana has a deck rating of 0/9, superstructure rating of 0/9, and substructure rating of 0/9 on the FHWA's 0–9 scale.
How often is LA0506 inspected?
LA0506'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 306 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LA0506 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 LA0506?
LA0506 has an NBI inventory load rating of 11.8 metric tons.
Who is responsible for maintaining LA0506?
LA0506 is owned and maintained by State Highway Agency.
How old is LA0506 and does age affect safety?
LA0506 was built in 1931, making it 95 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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.