County profile · official public datasets

Clermont County, OH

319 public highway bridges tracked in the FHWA National Bridge Inventory: 61.4% rated Good, 30.1% Fair, 8.5% Poor.

319
Public bridges: 61.4%
Good condition: 8.5%
Poor condition

The verdict

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

Clermont County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

74th
of 88 on Poor share: 8.5%
Poor-condition share: 319
public highway bridges: 1972
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.

Clermont County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Clermont County ranks #74 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.5%). Clermont County, Ohio contains 319 public highway bridges. Roughly 61.4% are rated “Good,” 30.1% “Fair,” and 8.5% “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

319

Public highway bridges in Clermont County

Good condition

61.4%

196 of 319 rated 7-9

Fair condition

30.1%

96 of 319 rated 5-6

Poor condition

8.5%

27 of 319 rated 4 or below

In-state Poor-share rank

#74 of 88

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

Condition distribution

Share of 319 NBI-tracked bridges by lowest applicable component rating.

Good

61.4% (196)

Fair

30.1% (96)

Poor

8.5% (27)

Clermont County's Poor-condition bridges carry 38,899 vehicle crossings a day

That is 2.7% of the county's reported daily bridge traffic on 7.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,556 crossings a day against 5,641 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 316 of 319 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

47.6% of Clermont County's bridges have passed the 50-year mark

152 of the 319 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 61.4% 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 19.6% of the county's Poor-condition bridge traffic

EAST LOVELAND over EAST LOVELAND AVE., built 1900, carries 7,622 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 27-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 38,899 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

1
1900s

26
1910s

10
1920s

13
1930s

15
1940s

3
1950s

9
1960s

33
1970s

50
1980s

30
1990s

56
2000s

47
2010s

19
2020s

7

What this shows Construction peaked in the 1990s, when 56 of the county's bridges still in the inventory were built, which is 17.6% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1972, 5 years older than the Ohio average of 1977.

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

The 5 Ohio counties nearest Clermont County in number of bridges, with their condition splits. Its 8.5% Poor share is the 6th-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1976 is in line with the group.

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

Bridge inventory size and condition shares for Clermont County and the 5 Ohio counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Auglaize County	321	81.9%	17.8%	0.3%	1980
Columbiana County	321	58.9%	38.6%	2.5%	1961
Fairfield County	320	56.6%	38.4%	5%	1973
Clermont County (this page)	319	61.4%	30.1%	8.5%	1972
Van Wert County	317	89%	11%	0%	1982
Miami County	315	72.1%	21%	7%	1983

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

Similar inventory size

Nearest county inventories outside OH (319 bridges here).

Garland County, AR · 319 bridges
Mesa County, CO · 319 bridges
Adams County, IL · 319 bridges
Bates County, MO · 319 bridges

Similar average build year

Nearest mean year-built outside OH (1972 here).

Santa Clara County, CA · avg 1972 · 964 bridges
Madison County, AL · avg 1972 · 710 bridges
Kern County, CA · avg 1972 · 668 bridges
York County, PA · avg 1972 · 569 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 319 Good 196 Fair 96 Poor 27

All bridges (319)

Sort:

Clermont County Bridge Snapshot

Condition distribution

Clermont County's Poor-condition bridges carry 38,899 vehicle crossings a day

47.6% of Clermont County's bridges have passed the 50-year mark

One structure carries 19.6% of the county's Poor-condition bridge traffic

How Clermont 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 (319)

Jett Hill

Round Bottom

Shayler Road

Bauer Road

Bristol Road

LEWIS SOUTH

Mt Zion Road

COUNTY ROAD 81

Starling Road

Burdsall Road

US 50

US 50

US 52

SR133

Taylor Pike

Big Indian Road

BAUER ROAD

LOVELANDMIAMIVILLE

Hill Station Road

Barg Salt Run Rd

Taylor Pike

Apple Road

Apple Road

Stonelick Williams

Elklick Road

Baxendale

COUNTY ROAD 33

Old 74

Ninemile Tobasco

US 52

I275 SB

BACH BUXTON RD

MILFORD PARKWAY

HAPPY HOLLOW ROAD

RAMP SR32

I275 NB

Ramp M 275 to SR32

IR275

IR275

Swings Corner Pt

Happy Hollow Rd

FELICITY CEDRON RD

US50

RAMP

BETHEL MAPLE

FELICITY CEDRON RD

BENTON ROAD

SUGARTREE RD.

BALDWIN ROAD

LAUREL PT. ISABEL

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