Swan Lake Rd
Carrying Swan Lake Rd over Red Chute Bayou
0.7 M EAST OF POOLE ROAD, Bossier, Louisiana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Swan Lake Rd in Bossier, Louisiana sits above 6% of rated Louisiana bridges on inventory load rating (15 t), while its 1989 build year is earlier than 35% of Bossier's recorded-year cohort (270 bridges).
Swan Lake Rd in Bossier, Louisiana is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1989, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 0. 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:040832170932711
LATE-CENTURY · TIMBER · LONG-SPAN-RUN · TIED-CTRL · TRACE-ADT · LIGHT-LOAD · CAT-POOR
- LATE-CENTURY 1980–1999
- TIMBER Wood or timber
- LONG-SPAN-RUN 18 spans
- TIED-CTRL Tied control
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light 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: Swan Lake Rd
The Swan Lake Rd bridge in Bossier, Louisiana carries Swan Lake Rd over Red Chute Bayou. It was built in 1989, making it 37 years old today. The structure is built primarily of wood or timber and spans 18 sections, stretching 82.9 meters (272 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Louisiana bridges. It is owned and maintained by County 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. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How Swan Lake Rd compares
Age against the county: built in 1989, earlier than 95 of Bossier's 270 bridges with a recorded construction year (35%), against a county median build year of 1979. 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).
Swan Lake Rd vs every rated Louisiana bridge
Inventory load rating (metric tons), FHWA NBI, this state
15 Top 94% higher than 6% 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.
Bossier inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 270 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
- 1989
- Material
- Wood or Timber
- Number of Spans
- 18
- Structure Length
- 82.9 m (272 ft)
- Deck Width
- 8.0 m (26 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 20 vehicles/day
- Structure Number
- 040832170932711
Condition Analysis
- • The deck (driving surface) is in critical condition (0/9), with severe deterioration recorded on the inspecting agency's 0-9 scale.
- • The superstructure (beams and supports above the deck) is in critical condition (0/9), with severe deterioration recorded on the inspecting agency's 0-9 scale.
- • The substructure (piers and abutments) rates critical at 0/9, with severe deterioration on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
Swan Lake 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 Swan Lake Rd against other structures in Bossier 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 Swan Lake Rd?
Swan Lake Rd in Bossier, 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 Swan Lake Rd inspected?
Swan Lake 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 20 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Swan Lake 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 Swan Lake Rd?
Swan Lake Rd has an NBI inventory load rating of 14.5 metric tons.
Who is responsible for maintaining Swan Lake Rd?
Swan Lake Rd is owned and maintained by County Highway Agency.
How old is Swan Lake Rd and does age affect safety?
Swan Lake Rd was built in 1989, making it 37 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.