Mill Slough Road
Carrying Mill Slough Road over Mill Slough
0.2 mile E of Michigan Av, Osceola, Florida
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Mill Slough Road in Osceola, Florida sits above 93% of rated Florida bridges on inventory load rating (60 t), while its 1976 build year is earlier than 58% of Osceola's recorded-year cohort (255 bridges).
Mill Slough Road in Osceola, Florida is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1976, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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:925002
INTERSTATE-ERA · CONCRETE · LONG-SPAN-RUN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- LONG-SPAN-RUN 4 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: Mill Slough Road
The Mill Slough Road bridge in Osceola, Florida carries Mill Slough Road over Mill Slough. It was built in 1976, making it 50 years old today. It was last reconstructed in 1993, extending its service life. The structure is built primarily of concrete and spans 4 sections, stretching 13.4 meters (44 feet) end to end. Daily traffic averages 8,000 vehicles, placing it in the moderately-trafficked tier of Florida bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How Mill Slough Road compares
Age against the county: built in 1976, earlier than 147 of Osceola's 255 bridges with a recorded construction year (58%), against a county median build year of 1993. 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).
Mill Slough Road vs every rated Florida bridge
Inventory load rating (metric tons), FHWA NBI, this state
60 Top 7% higher than 93% 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.
Osceola inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 255 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
- 1976
- Last Reconstructed
- 1993
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 13.4 m (44 ft) 0
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 8,000 vehicles/day
- Structure Number
- 925002
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 Mill Slough Road 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 Mill Slough Road against other structures in Osceola 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 Mill Slough Road?
Mill Slough Road in Osceola, Florida on the FHWA's 0–9 scale.
How often is Mill Slough Road inspected?
Mill Slough Road'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 8,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Mill Slough Road 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 Mill Slough Road?
Mill Slough Road has an NBI inventory load rating of 59.5 metric tons.
Who is responsible for maintaining Mill Slough Road?
Mill Slough Road is owned and maintained by City/Municipal Highway Agency.
How old is Mill Slough Road and does age affect safety?
Mill Slough Road was built in 1976, making it 50 years old and last reconstructed in 1993.
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.