JOHNSTON STREET
Carrying JOHNSTON STREET over COULEE MINE BR
0.3 MILES EAST OF LA 3025, Lafayette, Louisiana
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: JOHNSTON STREET
The JOHNSTON STREET bridge in Lafayette, Louisiana carries JOHNSTON STREET over COULEE MINE BR. It was built in 1958, making it 68 years old today. The structure is built primarily of concrete and spans 4 sections, stretching 24.4 meters (80 feet) end to end. Daily traffic averages 29,320 vehicles, placing it in the heavily-trafficked tier of Louisiana bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 4/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 20.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How JOHNSTON STREET 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 How the historical reference is calculated.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
- 1958
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 24.4 m (80 ft)
- Deck Width
- 19.9 m (65 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 29,320 vehicles/day
- Structure Number
- 032800800208171
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
How to read this record
JOHNSTON STREET 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 JOHNSTON STREET 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 JOHNSTON STREET?
JOHNSTON STREET in Lafayette, Louisiana has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is JOHNSTON STREET inspected?
JOHNSTON STREET'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 29,320 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. JOHNSTON STREET 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 JOHNSTON STREET?
JOHNSTON STREET has an NBI inventory load rating of 20.7 metric tons.
Who is responsible for maintaining JOHNSTON STREET?
JOHNSTON STREET is owned and maintained by City/Municipal Highway Agency.
How old is JOHNSTON STREET and does age affect safety?
JOHNSTON STREET was built in 1958, making it 68 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.