N RIDGE AVENUE
Carrying N RIDGE AVENUE over MORGAN DITCH
N RIDGE AVE AT TRADE SQ, Miami, Ohio
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N RIDGE AVENUE
The N RIDGE AVENUE bridge in Miami, Ohio carries N RIDGE AVENUE over MORGAN DITCH. It was built in 1948, making it 78 years old today. It was last reconstructed in 1992, extending its service life. The structure is built primarily of prestressed concrete and spans 1 section, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 3,866 vehicles, placing it in the moderately-trafficked tier of Ohio bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure 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 38.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N RIDGE AVENUE compares
Live comparison across Ohio.
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 How the historical reference is calculated.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
- 1948
- Last Reconstructed
- 1992
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 7.0 m (23 ft)
- Deck Width
- 16.1 m (53 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 3,866 vehicles/day
- Structure Number
- 5560381
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether N RIDGE AVENUE 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 N RIDGE AVENUE against other structures in Miami and across Ohio. Ohio 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 N RIDGE AVENUE?
N RIDGE AVENUE in Miami, Ohio has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is N RIDGE AVENUE inspected?
N RIDGE AVENUE'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 3,866 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N RIDGE AVENUE 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 N RIDGE AVENUE?
N RIDGE AVENUE has an NBI inventory load rating of 38.9 metric tons.
Who is responsible for maintaining N RIDGE AVENUE?
N RIDGE AVENUE is owned and maintained by City/Municipal Highway Agency.
How old is N RIDGE AVENUE and does age affect safety?
N RIDGE AVENUE was built in 1948, making it 78 years old and last reconstructed in 1992.
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.