AIRPORT RD.(CR-31)
Carrying AIRPORT RD.(CR-31) over ROCK CREEK
0.68 Mile North of SR-84, Collier, Florida
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
AIRPORT RD.(CR-31) in Collier, Florida sits above 41% of rated Florida bridges on inventory load rating (35 t), while its 1979 build year is earlier than 55% of Collier's recorded-year cohort (370 bridges).
AIRPORT RD.(CR-31) in Collier, Florida is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1979, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair 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 FL:030186
INTERSTATE-ERA · PRESTRESS · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
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: AIRPORT RD.(CR-31)
The AIRPORT RD.(CR-31) bridge in Collier, Florida carries AIRPORT RD.(CR-31) over ROCK CREEK. It was built in 1979, making it 47 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 27.5 meters (90 feet) end to end. Daily traffic averages 45,473 vehicles, placing it in the heavily-trafficked tier of Florida bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How AIRPORT RD.(CR-31) compares
Age against the county: built in 1979, earlier than 204 of Collier's 370 bridges with a recorded construction year (55%), against a county median build year of 1986. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Florida bridges with a recorded inventory load rating (13,032 of 13,036 rated).
AIRPORT RD.(CR-31) vs every rated Florida bridge
Inventory load rating (metric tons), FHWA NBI, this state
35 Top 59% higher than 41% of 13,032 bridges
rated Florida 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.
Collier inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 370 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
- 1979
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 27.5 m (90 ft)
- Deck Width
- 29.6 m (97 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 45,473 vehicles/day
- Structure Number
- 030186
Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
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 AIRPORT RD.(CR-31) 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 AIRPORT RD.(CR-31) against other structures in Collier and across Florida. Florida 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 AIRPORT RD.(CR-31)?
AIRPORT RD.(CR-31) in Collier, Florida has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is AIRPORT RD.(CR-31) inspected?
AIRPORT RD.(CR-31)'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 45,473 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. AIRPORT RD.(CR-31) is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for AIRPORT RD.(CR-31)?
AIRPORT RD.(CR-31) has an NBI inventory load rating of 34.7 metric tons.
Who is responsible for maintaining AIRPORT RD.(CR-31)?
AIRPORT RD.(CR-31) is owned and maintained by County Highway Agency.
How old is AIRPORT RD.(CR-31) and does age affect safety?
AIRPORT RD.(CR-31) was built in 1979, making it 47 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.
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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.