SW 256th Street
Carrying SW 256th Street over Levee L-31E Barrow Canal
50Ft. E of SW 97th Avenue, Miami-Dade, Florida
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SW 256th Street in Miami-Dade, Florida sits above 1% of rated Florida bridges on inventory load rating (0 t), while its 1967 build year is earlier than 65% of Miami-Dade's recorded-year cohort (1,057 bridges).
SW 256th Street in Miami-Dade, Florida is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1967, 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:874479
INTERSTATE-ERA · PRESTRESS · SINGLE-SPAN · TIED-CTRL · ADT-UNK · TRACE-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- ADT-UNK ADT unknown
- TRACE-LOAD Trace 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: SW 256th Street
The SW 256th Street bridge in Miami-Dade, Florida carries SW 256th Street over Levee L-31E Barrow Canal. It was built in 1967, making it 59 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 13.7 meters (45 feet) end to end. Average daily traffic is not reported for this structure. 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. All reported major components score above the Poor range.
How SW 256th Street compares
Age against the county: built in 1967, earlier than 683 of Miami-Dade's 1,057 bridges with a recorded construction year (65%), against a county median build year of 1973. 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).
SW 256th Street vs every rated Florida bridge
Inventory load rating (metric tons), FHWA NBI, this state
0 Top 99% higher than 1% 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.
Miami-Dade inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 1,057 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
- 1967
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 13.7 m (45 ft)
- Deck Width
- 6.3 m (21 ft)
- Owner
- County Highway Agency
- Structure Number
- 874479
Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
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 SW 256th Street 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 SW 256th Street against other structures in Miami-Dade 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 SW 256th Street?
SW 256th Street in Miami-Dade, 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 SW 256th Street inspected?
SW 256th Street's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SW 256th Street 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 SW 256th Street?
SW 256th Street has an NBI inventory load rating of 0.0 metric tons.
Who is responsible for maintaining SW 256th Street?
SW 256th Street is owned and maintained by County Highway Agency.
How old is SW 256th Street and does age affect safety?
SW 256th Street was built in 1967, making it 59 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.