County profile · official public datasets

Perry County, OH

175 public highway bridges tracked in the FHWA National Bridge Inventory: 66.9% rated Good, 31.4% Fair, 1.7% Poor.

175
Public bridges: 66.9%
Good condition: 1.7%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Perry County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 19%
lowest Poor share in state: 1.7%
Poor-condition share: 175
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.

Perry County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Perry County ranks #17 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.7%). Perry County, Ohio contains 175 public highway bridges. Roughly 66.9% are rated “Good,” 31.4% “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.

Total bridges

175

Public highway bridges in Perry County

Good condition

66.9%

117 of 175 rated 7-9

Fair condition

31.4%

55 of 175 rated 5-6

Poor condition

1.7%

3 of 175 rated 4 or below

In-state Poor-share rank

#17 of 88

Among Ohio counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 175 NBI-tracked bridges by lowest applicable component rating.

Good

66.9% (117)

Fair

31.4% (55)

Poor

1.7% (3)

Perry County's Poor-condition bridges carry 2,319 vehicle crossings a day

That is 1.3% of the county's reported daily bridge traffic on 1.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 773 crossings a day against 1,006 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 175 of 175 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

38.3% of Perry County's bridges have passed the 50-year mark

67 of the 175 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 66.9% 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 94% of the county's Poor-condition bridge traffic

SR 345 over BUCKEYE FK OF JOHNATHAN, built 1993, carries 2,179 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 3-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,319 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

28
1920s

1
1930s

8
1940s

2
1950s

6
1960s

14
1970s

12
1980s

14
1990s

43
2000s

19
2010s

19
2020s

9

What this shows Construction peaked in the 1990s, when 43 of the county's bridges still in the inventory were built, which is 24.6% 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 Perry County compares with Ohio's closest counties by inventory size

The 5 Ohio counties nearest Perry County in number of bridges, with their condition splits. Its 1.7% Poor share is the 1st-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1977 is in line with the group.

Showing the 5 closest of 87 Ohio counties eligible for comparison.

Bridge inventory size and condition shares for Perry County and the 5 Ohio counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Coshocton County	186	46.8%	42.5%	10.8%	1984
Adams County	184	42.9%	52.2%	4.9%	1974
Vinton County	179	50.3%	41.3%	8.4%	1977
Paulding County	176	69.3%	24.4%	6.3%	1986
Perry County (this page)	175	66.9%	31.4%	1.7%	1974
Monroe County	167	42.5%	47.3%	10.2%	1963

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 Perry 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 Perry County, both outside Ohio so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside OH (175 bridges here).

Smith County, MS · 175 bridges
Warren County, MS · 175 bridges
Hamilton County, NE · 175 bridges
San Miguel County, NM · 175 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.

All 175 Good 117 Fair 55 Poor 3

All bridges (175)

Sort:

Perry County Bridge Snapshot

Condition distribution

Perry County's Poor-condition bridges carry 2,319 vehicle crossings a day

38.3% of Perry County's bridges have passed the 50-year mark

One structure carries 94% of the county's Poor-condition bridge traffic

How Perry County compares with Ohio's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (175)

SR 668

MAINESVILLE RD

CORNSTILL RD

Black Gold Road

COOPERMILLL CR 34

MAINESVILLE RD

CLAY ROAD

NUZUM STREET

SR 555

PORTI-FLAMINGO RD

ZION ROAD

TOWNSHIP ROAD 41

TOWNSHIP ROAD 312

MARIETTA RD CR 11

FLAGDALE RD

SCENIC ROAD

TOWNSHIP ROAD 169

STATE ROUTE 93

NO. 8 HOLLOW ROAD

SR 37

OLD TOWN ROAD

SR 668

SCOTCH HILL ROAD

TOWNSHIP RD 1180

SR 345

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