Total bridges
236
Public highway bridges in Wyandot County
County profile · official public datasets
Wyandot County, OH
236 public highway bridges tracked in the FHWA National Bridge Inventory: 71.2% rated Good, 27.1% Fair, 1.7% Poor.
- 236
- Public bridges
- 71.2%
- Good condition
- 1.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Wyandot County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 18%
- lowest Poor share in state
- 1.7%
- Poor-condition share
- 236
- public highway bridges
- 1984
- 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.
Wyandot County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Wyandot County ranks #16 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.7%). Wyandot County, Ohio contains 236 public highway bridges. Roughly 71.2% are rated “Good,” 27.1% “Fair,” and 1.7% “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
71.2%
168 of 236 rated 7-9
Fair condition
27.1%
64 of 236 rated 5-6
Poor condition
1.7%
4 of 236 rated 4 or below
In-state Poor-share rank
#16 of 88
Among Ohio counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 236 NBI-tracked bridges by lowest applicable component rating.
Good 71.2% (168)
Fair 27.1% (64)
Poor 1.7% (4)
Wyandot County's Poor-condition bridges carry 9,076 vehicle crossings a day
That is 2.2% of the county's reported daily bridge traffic on 1.7% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,269 crossings a day against 1,891 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 236 of 236 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.9% of Wyandot County's bridges have passed the 50-year mark
80 of the 236 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 71.2% 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 95.1% of the county's Poor-condition bridge traffic
USR 23 SB over HONEY RUN, built 1966, carries 8,628 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 4-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 9,076 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Wyandot County's bridges were built
236 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 3
1900–1909
3 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 1
1920–1929
1 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 14
1950–1959
14 bridges
- 1960s
1960–1969
47 bridges
- 1970s
1970–1979
25 bridges
- 1980s
1980–1989
27 bridges
- 1990s
1990–1999
42 bridges
- 2000s
2000–2009
39 bridges
- 2010s
2010–2019
21 bridges
- 2020s 10
2020–2029
10 bridges
What this shows Construction peaked in the 1960s, when 47 of the county's bridges still in the inventory were built, which is 19.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1984, 7 years newer than the Ohio average of 1977.
How Wyandot County compares with Ohio's closest counties by inventory size
The 5 Ohio counties nearest Wyandot County in number of bridges, with their condition splits. Its 1.7% Poor share is the 2nd-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1977 is 7 years newer.
Showing the 5 closest of 87 Ohio counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Highland County | 245 | 69.8% | 28.2% | 2% | 1985 |
| Williams County | 242 | 52.5% | 45% | 2.5% | 1974 |
| Fayette County | 241 | 60.2% | 39% | 0.8% | 1979 |
| Gallia County | 237 | 38.4% | 56.1% | 5.5% | 1973 |
| Wyandot County (this page) | 236 | 71.2% | 27.1% | 1.7% | 1984 |
| Marion County | 229 | 63.8% | 34.1% | 2.2% | 1975 |
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 Wyandot 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 Wyandot County, both outside Ohio so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OH (236 bridges here).
- Etowah County, AL · 236 bridges
- York County, ME · 236 bridges
- Cabarrus County, NC · 236 bridges
- Catawba County, NC · 236 bridges
Similar average build year
Nearest mean year-built outside OH (1984 here).
- Hennepin County, MN · avg 1984 · 936 bridges
- Duval County, FL · avg 1984 · 831 bridges
- El Paso County, CO · avg 1984 · 686 bridges
- Bell County, TX · avg 1984 · 660 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (168)
TH108e
GoodOver: LITTLE TYMOCHTEE CREEK
0.25 MILES S OF CH47c, Wyandot, OH
Built 2005 Load: 50.2 t ADT: 351
TH76b
GoodOver: DITCH
0.10 MILES W OF CH93a, Wyandot, OH
Built 1977 Load: 50.5 t ADT: 324
TH18a
GoodOver: POVERTY RUN
0.10 MILES E OF TH 106d, Wyandot, OH
Built 2000 Load: 51.8 t ADT: 324
CH61a
GoodOver: SANDUSKY RIVER
JUST W OF TH60a, Wyandot, OH
Built 1968 Load: 52.2 t ADT: 385
TH106d
GoodOver: POERTY RUN
JUST N OF TH18a, Wyandot, OH
Built 2000 Load: 52.8 t ADT: 112
TH125a
GoodOver: LITTLE SANDUSKY RIVER
1.0 MILES S OF SH294, Wyandot, OH
Built 2015 Load: 53.5 t ADT: 90
OGG STREET
GoodOver: SPRING RUN
BTW FINDLAY & DOW, Wyandot, OH
Built 2020 Load: 53.8 t ADT: 660
SR 293
GoodOver: USR 30
1 MILE NORTH OF KIRBY, Wyandot, OH
Built 2006 Load: 55.4 t ADT: 219
TH82b
GoodOver: LITTLE TYMOCHTEE CREEK
0.25 MILES N OF CH71a, Wyandot, OH
Built 1967 Load: 63.2 t ADT: 324
TH94a
GoodOver: TYMOCHTEE CREEK
0.20 MILES S OF SH67, Wyandot, OH
Built 2003 Load: 64.2 t ADT: 324
TH58b
GoodOver: OAK RUN
0.20 MILES E OF TH96c, Wyandot, OH
Built 2003 Load: 64.8 t ADT: 324
CH113a
GoodOver: HONEY RUN
JUST N OF TH72a, Wyandot, OH
Built 1990 Load: 68.0 t ADT: 156
TH82a
GoodOver: REEVHORN RUN
0.25 MILES N OF CH76b, Wyandot, OH
Built 1995 Load: 71.6 t ADT: 324
CH35a
GoodOver: TAYLOR RUN
0.20 MILES N OF SH103, Wyandot, OH
Built 2000 Load: 73.2 t ADT: 209
TH40a
GoodOver: SANDUSKY RIVER
0.20 MILES NORTH OF TH37a, Wyandot, OH
Built 1900 Load: 74.5 t ADT: 95
TH128f
GoodOver: TAYLOR RUN
JUST S OF CH30e, Wyandot, OH
Built 1993 Load: 81.3 t ADT: 324
TH76a
GoodOver: REEVHORN RUN
0.50 MILES E OF CH215, Wyandot, OH
Built 1995 Load: 83.6 t ADT: 324
CH130a
GoodOver: SANDUSKY RIVER
0.25 MILES S OF CH62c, Wyandot, OH
Built 1878 Load: 90.7 t ADT: 83
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.