Duncanson RD #139
Carrying Duncanson RD #139 over FLAT RUN
SOUTH OF CR.#2, Highland, Ohio
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Duncanson RD #139 in Highland, Ohio sits above 2% of rated Ohio bridges on inventory load rating (13 t), while its 1984 build year is earlier than 52% of Highland's recorded-year cohort (245 bridges).
Duncanson RD #139 in Highland, Ohio is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1984, it carries 3 rated components 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 OH:3633756
LATE-CENTURY · STEEL · SINGLE-SPAN · TIED-CTRL · LOCAL-ADT · LIGHT-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- STEEL Steel
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- LOCAL-ADT Local ADT
- LIGHT-LOAD Light 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: Duncanson RD #139
The Duncanson RD #139 bridge in Highland, Ohio carries Duncanson RD #139 over FLAT RUN. It was built in 1984, making it 42 years old today. It was last reconstructed in 2002, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 10.1 meters (33 feet) end to end. Daily traffic averages 324 vehicles, placing it in the lower-traffic tier of Ohio bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How Duncanson RD #139 compares
Age against the county: built in 1984, earlier than 127 of Highland's 245 bridges with a recorded construction year (52%), against a county median build year of 1985. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Ohio bridges with a recorded inventory load rating (26,729 rated).
Duncanson RD #139 vs every rated Ohio bridge
Inventory load rating (metric tons), FHWA NBI, this state
13 Top 98% higher than 2% of 26,729 bridges
rated Ohio 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.
Highland inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 245 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
- 1984
- Last Reconstructed
- 2002
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 10.1 m (33 ft)
- Deck Width
- 6.7 m (22 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 324 vehicles/day
- Structure Number
- 3633756
Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
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 Duncanson RD #139 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 Duncanson RD #139 against other structures in Highland 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 Duncanson RD #139?
Duncanson RD #139 in Highland, Ohio has a deck rating of 8/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is Duncanson RD #139 inspected?
Duncanson RD #139'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 324 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Duncanson RD #139 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 Duncanson RD #139?
Duncanson RD #139 has an NBI inventory load rating of 13.0 metric tons.
Who is responsible for maintaining Duncanson RD #139?
Duncanson RD #139 is owned and maintained by County Highway Agency.
How old is Duncanson RD #139 and does age affect safety?
Duncanson RD #139 was built in 1984, making it 42 years old and last reconstructed in 2002.
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.