Irby Rd.
Carrying Irby Rd. over COULEE
0.19 MI East of Dupre St, Lafayette, Louisiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: Irby Rd.
The Irby Rd. bridge in Lafayette, Louisiana carries Irby Rd. over COULEE. It was built in 2002, making it 24 years old today. The structure is built primarily of concrete and spans 4 sections, stretching 10.1 meters (33 feet) end to end. Daily traffic averages 100 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 culvert at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How Irby Rd. 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 How the historical reference is calculated.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
- 2002
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 10.1 m (33 ft)
- Deck Width
- 13.5 m (44 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 100 vehicles/day
- Structure Number
- 032830178915951
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether Irby Rd. is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare Irby Rd. against other structures in Lafayette 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 Irby Rd.?
Irby Rd. in Lafayette, Louisiana on the FHWA's 0–9 scale.
How often is Irby Rd. inspected?
Irby 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 100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Irby Rd. is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for Irby Rd.?
Irby Rd. has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining Irby Rd.?
Irby Rd. is owned and maintained by County Highway Agency.
How old is Irby Rd. and does age affect safety?
Irby Rd. was built in 2002, making it 24 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.