Conway Bayou
Carrying Conway Bayou over BARROW PIT
26 Ft E of US 61, St. James, Louisiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: Conway Bayou
The Conway Bayou bridge in St. James, Louisiana carries Conway Bayou over BARROW PIT. It was built in 1968, making it 58 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 17.4 meters (57 feet) end to end. Daily traffic averages 163 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. 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.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How Conway Bayou 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 How the historical reference is calculated.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
- 1968
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 17.4 m (57 ft)
- Deck Width
- 7.9 m (26 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 163 vehicles/day
- Structure Number
- 614730060904411
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.
- • The superstructure (beams and supports above the deck) is in critical condition (0/9), with severe deterioration requiring urgent attention.
- • The substructure (piers and abutments) rates critical at 0/9, severe deterioration that needs urgent attention.
How to read this record
Conway Bayou 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 Conway Bayou against other structures in St. James 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 Conway Bayou?
Conway Bayou in St. James, 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 Conway Bayou inspected?
Conway Bayou'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 163 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Conway Bayou 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 Conway Bayou?
An inventory load rating is not recorded for Conway Bayou.
Who is responsible for maintaining Conway Bayou?
Conway Bayou is owned and maintained by County Highway Agency.
How old is Conway Bayou and does age affect safety?
Conway Bayou was built in 1968, making it 58 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.