County profile · official public datasets

Columbiana County, OH

321 public highway bridges tracked in the FHWA National Bridge Inventory: 58.9% rated Good, 38.6% Fair, 2.5% Poor.

321
Public bridges: 58.9%
Good condition: 2.5%
Poor condition

The verdict

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

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

Top 34%
lowest Poor share in state: 2.5%
Poor-condition share: 321
public highway bridges: 1961
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.

Columbiana County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Columbiana County ranks #30 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.5%). Columbiana County, Ohio contains 321 public highway bridges. Roughly 58.9% are rated “Good,” 38.6% “Fair,” and 2.5% “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

321

Public highway bridges in Columbiana County

Good condition

58.9%

189 of 321 rated 7-9

Fair condition

38.6%

124 of 321 rated 5-6

Poor condition

2.5%

8 of 321 rated 4 or below

In-state Poor-share rank

#30 of 88

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

Condition distribution

Share of 321 NBI-tracked bridges by lowest applicable component rating.

Good

58.9% (189)

Fair

38.6% (124)

Poor

2.5% (8)

Columbiana County's Poor-condition bridges carry 4,485 vehicle crossings a day

That is 0.5% of the county's reported daily bridge traffic on 2.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 561 crossings a day against 2,047 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 320 of 321 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

66.4% of Columbiana County's bridges have passed the 50-year mark

213 of the 321 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 58.9% 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 34.8% of the county's Poor-condition bridge traffic

HUNSTON RD 443 over LESLIE RUN, built 1940, carries 1,561 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 8-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,485 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

10
1900s

31
1910s

6
1920s

12
1930s

23
1940s

16
1950s

25
1960s

52
1970s

50
1980s

21
1990s

29
2000s

20
2010s

20
2020s

6

What this shows Construction peaked in the 1960s, when 52 of the county's bridges still in the inventory were built, which is 16.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1961, 16 years older than the Ohio average of 1977.

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

The 5 Ohio counties nearest Columbiana County in number of bridges, with their condition splits. Its 2.5% Poor share is the 3rd-lowest of these 6. Its average build year of 1961 against a peer-group mean of 1978 is 17 years older.

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

Bridge inventory size and condition shares for Columbiana 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 (this page)	321	58.9%	38.6%	2.5%	1961
Fairfield County	320	56.6%	38.4%	5%	1973
Clermont County	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 Columbiana 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 Columbiana County, both outside Ohio so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside OH (321 bridges here).

Christian County, IL · 321 bridges
Jackson County, IN · 321 bridges
Umatilla County, OR · 321 bridges
Giles County, TN · 321 bridges

Similar average build year

Nearest mean year-built outside OH (1961 here).

Westchester County, NY · avg 1961 · 774 bridges
Tehama County, CA · avg 1961 · 450 bridges
Berkshire County, MA · avg 1961 · 450 bridges
Schuylkill County, PA · avg 1961 · 368 bridges

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

All 321 Good 189 Fair 124 Poor 8

All bridges (321)

Sort:

Columbiana County Bridge Snapshot

Condition distribution

Columbiana County's Poor-condition bridges carry 4,485 vehicle crossings a day

66.4% of Columbiana County's bridges have passed the 50-year mark

One structure carries 34.8% of the county's Poor-condition bridge traffic

How Columbiana 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 (321)

SR 7 & 46

SR 7

SR 11

SR 11

SR 11

SR 11

TR-894 CHURCHILL R

SR 11

SR 11

SR 14

US 30

US 30 WB

U.S.30&S.R.39(E.B)

RAMP A US30 TO S39

RAMP A US30NC-SR39

SR 46

SR 154

SR 154

SR 164 & 517

SR 170

SR 267

SR 344

SR 517

S.R.518

LIPPINCOTT RD 709

SOUTHERN AVE 1085

TREAT PLANT ROADD

US 62

LISBON DUNGANON869

US 30

SR 11

EAGLETON RD 761

HAWKINS RD 938

DARLINGTON RD 1024

CRAWFORD RD 1076

JACKSON STREET

US 62

US 62 (WB.)

SR 11

US 30 & RAMP O

SR 7 RAMP D

RAMP M TO US 30

SR 558

SR 7

USR 30 & SR 7NB

US 30 EB

SR 517

MECHANICSTOWN 406

FOUNDRY HILL 740

SR 39

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