Total bridges
223
Public highway bridges in Brown County
County profile · official public datasets
Brown County, OH
223 public highway bridges tracked in the FHWA National Bridge Inventory: 62.8% rated Good, 34.1% Fair, 3.1% Poor.
- 223
- Public bridges
- 62.8%
- Good condition
- 3.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Brown County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 44%
- lowest Poor share in state
- 3.1%
- Poor-condition share
- 223
- public highway bridges
- 1974
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Brown County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Brown County ranks #39 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.1%). Brown County, Ohio contains 223 public highway bridges. Roughly 62.8% are rated “Good,” 34.1% “Fair,” and 3.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
62.8%
140 of 223 rated 7-9
Fair condition
34.1%
76 of 223 rated 5-6
Poor condition
3.1%
7 of 223 rated 4 or below
In-state Poor-share rank
#39 of 88
Among Ohio counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 223 NBI-tracked bridges by lowest applicable component rating.
Good 62.8% (140)
Fair 34.1% (76)
Poor 3.1% (7)
Brown County's Poor-condition bridges carry 11,630 vehicle crossings a day
That is 3.9% of the county's reported daily bridge traffic on 3.1% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,661 crossings a day against 916 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 223 of 223 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
43.9% of Brown County's bridges have passed the 50-year mark
98 of the 223 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 62.8% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 55.7% of the county's Poor-condition bridge traffic
BUS.62 over OHIO RIVER CSX RR LOCAL, built 1931, carries 6,478 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 7-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 11,630 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Brown County's bridges were built
223 bridges with a recorded construction year, grouped by decade
- pre-1900 3
Built before 1900
3 bridges
- 1900s 3
1900–1909
3 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 5
1920–1929
5 bridges
- 1930s 12
1930–1939
12 bridges
- 1940s 14
1940–1949
14 bridges
- 1950s
1950–1959
32 bridges
- 1960s
1960–1969
19 bridges
- 1970s
1970–1979
23 bridges
- 1980s
1980–1989
28 bridges
- 1990s
1990–1999
39 bridges
- 2000s
2000–2009
28 bridges
- 2010s 10
2010–2019
10 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1990s, when 39 of the county's bridges still in the inventory were built, which is 17.5% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1974) matches the Ohio average (1977).
How Brown County compares with Ohio's closest counties by inventory size
The 5 Ohio counties nearest Brown County in number of bridges, with their condition splits. Its 3.1% Poor share is the 5th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1974 is in line with the group.
Showing the 5 closest of 87 Ohio counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jefferson County | 226 | 44.2% | 47.3% | 8.4% | 1966 |
| Erie County | 225 | 66.7% | 32.9% | 0.4% | 1977 |
| Pickaway County | 224 | 62.9% | 34.8% | 2.2% | 1964 |
| Brown County (this page) | 223 | 62.8% | 34.1% | 3.1% | 1974 |
| Crawford County | 221 | 74.2% | 23.1% | 2.7% | 1981 |
| Union County | 221 | 68.8% | 29.9% | 1.4% | 1984 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Brown County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Brown County, both outside Ohio so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OH (223 bridges here).
- Woodford County, IL · 223 bridges
- Ford County, KS · 223 bridges
- Hardin County, KY · 223 bridges
- Stanton County, NE · 223 bridges
Similar average build year
Nearest mean year-built outside OH (1974 here).
- Knox County, TN · avg 1974 · 588 bridges
- Onondaga County, NY · avg 1974 · 472 bridges
- Orange County, NY · avg 1974 · 472 bridges
- Pierce County, WA · avg 1974 · 472 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (76)
SR 221
FairOver: DRY RUN
3.92 MI N OF US 52, Brown, OH
Built 1962 Load: 32.4 t ADT: 194
SR 221
FairOver: OPOSSUM RUN
2.44MI S OF SR 125, Brown, OH
Built 1961 Load: 32.4 t ADT: 194
STATE ROUTE 763
FairOver: BRUSHY FORK
6.17 MI N OF S.R. 41, Brown, OH
Built 1997 Load: 32.4 t ADT: 95
SR 763
FairOver: SUCK RUN
4.61 MI S OF SR 125, Brown, OH
Built 1977 Load: 32.4 t ADT: 95
OLD 68
FairOver: STRAIGHT CREEK
UNION & PLEAS. TWP. LINE, Brown, OH
Built 1938 Load: 32.4 t ADT: 379
MYERS HOLLOW ROAD
FairOver: STREAM
.02 MI.N. OF JCT. C30, Brown, OH
Built 1950 Load: 32.4 t ADT: 155
STONY HOLLOW ROAD
FairOver: STONY HOLLOW CREEK
.66 MI. W. OF JCT. C94, Brown, OH
Built 1950 Load: 32.4 t ADT: 60
GREATHOUSE ROAD
FairOver: STREAM
.63 MI. N. OF JCT. T16, Brown, OH
Built 1920 Load: 32.4 t ADT: 155
DAYHILL ARNHEIM RD
FairOver: STRAIGHT CREEK
100 FEET N. OF JCT. T179, Brown, OH
Built 1955 Load: 32.4 t ADT: 253
JOHN WOODS RD
FairOver: STREAM
1.1 MI. E. OF JCT. US 62, Brown, OH
Built 1965 Load: 32.4 t ADT: 385
RIPLEY RD
FairOver: RED OAK CREEK
1.43 MI.N.OF RIPLEY CORP., Brown, OH
Built 1930 Load: 32.4 t ADT: 268
HILE RD.
FairOver: STREAM
.1 MI. N. OF JCT. US 68, Brown, OH
Built 1925 Load: 32.4 t ADT: 797
EASTWOOD RD
FairOver: TODD RUN
.05 MI. N. OF JCT. C24, Brown, OH
Built 1958 Load: 32.4 t ADT: 1,686
UPPER FIVE MILE
FairOver: CRANE RUN
.01 MI. N. OF JCT. C8B, Brown, OH
Built 1940 Load: 32.4 t ADT: 121
KERNAN RD.
FairOver: WEST FORK OF EAST FORK
0.04 MI WEST US68, Brown, OH
Built 1999 Load: 32.4 t ADT: 324
ANDERSON STATE
FairOver: SOLOMON RUN
1.24 MI EAST CORP LINE, Brown, OH
Built 1999 Load: 32.4 t ADT: 198
MORGAN RD.
FairOver: E FORK LITTLE MIAMI RIVE
.25 M. WEST US 68, Brown, OH
Built 2001 Load: 32.4 t ADT: 89
STATE ROUTE 763
FairOver: WEST FORK EAGLE CREEK
2.9 MI S OF ST RT 125, Brown, OH
Built 2001 Load: 37.6 t ADT: 95
SR 125
FairOver: W FORK EAGLE CREEK
2.4MI E OF JCT US 62, Brown, OH
Built 1982 Load: 38.9 t ADT: 1,045
SR 763
FairOver: BEETLE CREEK
4.23 MI N OF SR 41, Brown, OH
Built 1993 Load: 40.5 t ADT: 404
USR 68
FairOver: E FORK LITTLE MIAMI RIVE
1.70 MI S OF CLINTON CTY, Brown, OH
Built 1932 Load: 42.1 t ADT: 2,961
SR 131
FairOver: GLADY RUN
.69 MI W OF US 50, Brown, OH
Built 1992 Load: 42.1 t ADT: 3,422
SR 286
FairOver: E FORK LITTLE MIAMI RIVE
.24 MI E. OF CLERMONT CTY, Brown, OH
Built 1988 Load: 50.2 t ADT: 965
US 52
FairOver: FISHNG GUT CR-SUBMERGED
ABERDEEN, Brown, OH
Built 1931 Load: 68.0 t ADT: 7,662
US 62
FairOver: WEST FORK OHIO BRUSH
1.64 MI E OF SR 32, Brown, OH
Built 1977 Load: 68.0 t ADT: 2,687
STERLING ROAD
FairOver: STERLING RUN
1.17 MI. E. OF JCT. T52, Brown, OH
Built 1979 Load: 77.8 t ADT: 324
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.