N. Wllie Rd
Carrying N. Wllie Rd over DRAINAGE DITCH
2.2 M NORTH OF LA 1077, St. Tammany, Louisiana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
N. Wllie Rd in St. Tammany, Louisiana sits above 97% of rated Louisiana bridges on inventory load rating (75 t), while its 1990 build year is earlier than 23% of St. Tammany's recorded-year cohort (360 bridges).
N. Wllie Rd in St. Tammany, Louisiana is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1990, it carries 1 rated component 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:625230364901311
LATE-CENTURY · STEEL · LONG-SPAN-RUN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-POOR
- LATE-CENTURY 1980–1999
- STEEL Steel
- LONG-SPAN-RUN 4 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy 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: N. Wllie Rd
The N. Wllie Rd bridge in St. Tammany, Louisiana carries N. Wllie Rd over DRAINAGE DITCH. It was built in 1990, making it 36 years old today. The structure is built primarily of steel and spans 4 sections, stretching 12.5 meters (41 feet) end to end. Daily traffic averages 2,255 vehicles, placing it in the moderately-trafficked tier of Louisiana bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How N. Wllie Rd compares
Age against the county: built in 1990, earlier than 82 of St. Tammany's 360 bridges with a recorded construction year (23%), against a county median build year of 1974. This is one of the newer structures in its county.
Live comparison across Louisiana bridges with a recorded inventory load rating (12,682 of 12,698 rated).
N. Wllie Rd vs every rated Louisiana bridge
Inventory load rating (metric tons), FHWA NBI, this state
75 Top 3% higher than 97% 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.
St. Tammany inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 360 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
- 1990
- Material
- Steel
- Number of Spans
- 4
- Structure Length
- 12.5 m (41 ft)
- Deck Width
- 24.4 m (80 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 2,255 vehicles/day
- Structure Number
- 625230364901311
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
N. Wllie Rd 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 N. Wllie Rd against other structures in St. Tammany 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 N. Wllie Rd?
N. Wllie Rd in St. Tammany, Louisiana on the FHWA's 0–9 scale.
How often is N. Wllie Rd inspected?
N. Wllie Rd'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 2,255 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N. Wllie Rd 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 N. Wllie Rd?
N. Wllie Rd has an NBI inventory load rating of 74.5 metric tons.
Who is responsible for maintaining N. Wllie Rd?
N. Wllie Rd is owned and maintained by County Highway Agency.
How old is N. Wllie Rd and does age affect safety?
N. Wllie Rd was built in 1990, making it 36 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.