County profile · official public datasets

Carroll County, OH

125 public highway bridges tracked in the FHWA National Bridge Inventory: 41.6% rated Good, 53.6% Fair, 4.8% Poor.

125
Public bridges
41.6%
Good condition
4.8%
Poor condition

The verdict

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

Carroll County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

46th
of 88 on Poor share
4.8%
Poor-condition share
125
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.

Carroll County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Carroll County ranks #46 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.8%). Carroll County, Ohio contains 125 public highway bridges. Roughly 41.6% are rated “Good,” 53.6% “Fair,” and 4.8% “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

125

Public highway bridges in Carroll County

Good condition

41.6%

52 of 125 rated 7-9

Fair condition

53.6%

67 of 125 rated 5-6

Poor condition

4.8%

6 of 125 rated 4 or below

In-state Poor-share rank

#46 of 88

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

Condition distribution

Share of 125 NBI-tracked bridges by lowest applicable component rating.

Good
41.6% (52)
Fair
53.6% (67)
Poor
4.8% (6)

Carroll County's Poor-condition bridges carry 1,453 vehicle crossings a day

That is 0.9% of the county's reported daily bridge traffic on 4.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 242 crossings a day against 1,751 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 125 of 125 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

49.6% of Carroll County's bridges have passed the 50-year mark

62 of the 125 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 41.6% 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 25.7% of the county's Poor-condition bridge traffic

COUNTY RD 27 over CENTER FORK DRAKE BN04, built 1960, carries 373 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,453 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Carroll County's bridges were built

125 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 22 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 55 to 64 years old in the 2024 inventory. Its average build year (1974) matches the Ohio average (1977).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Ohio counties nearest Carroll County in number of bridges, with their condition splits. Its 4.8% Poor share is the 4th-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.

Bridge inventory size and condition shares for Carroll County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Morgan County 159 3.8%
Defiance County 158 1.3%
Ottawa County 158 1.3%
Geauga County 141 6.4%
Harrison County 140 17.9%
Carroll County (this page) 125 4.8%

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

Similar inventory size

Nearest county inventories outside OH (125 bridges here).

Similar average build year

Nearest mean year-built outside OH (1974 here).

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

All 125 Good 52 Fair 67 Poor 6

All bridges (125)

AGUSTA TWP 411

Good

Over: MUDDY FR COXMANSION BN11

700 FT SOUTH OF STRT 9, Carroll, OH

Built 1976 Load: 37.3 t ADT: 209

SR 332

Good

Over: MC GUIRE CREEK

1.09 MI N OF JCT. SR164, Carroll, OH

Built 1934 Load: 38.2 t ADT: 3,342

CR 66

Good

Over: FRIDAY CREEK

0.5 MI N SR 9, Carroll, OH

Built 2014 Load: 38.9 t ADT: 332

COUNTY RD 29

Good

Over: WILLOW RUN BAXTER BN32

1000 FT N HAR TWP 162, Carroll, OH

Built 1955 Load: 38.9 t ADT: 200

COUNTY ROAD 30

Good

Over: MUDDY FORK LUCAS

1000 FT SOUTH OF CR 43, Carroll, OH

Built 2004 Load: 38.9 t ADT: 122

SR 542

Good

Over: ATWOOD RESERVOIR

0.44 MI N OF JCT SR 39, Carroll, OH

Built 2023 Load: 39.5 t ADT: 1,000

S.R. 9

Good

Over: MUDDY FORK CREEK

3.0 MI.S.OF COLUMBIANA CO, Carroll, OH

Built 2003 Load: 39.9 t ADT: 1,697

SR164

Good

Over: DINING FORK

3.24 MI. W. OF JCT. SR09, Carroll, OH

Built 1962 Load: 40.2 t ADT: 537

SR 183

Good

Over: SANDY BEAVER CANAL

0.07 MI W OF JCT. SR542, Carroll, OH

Built 1949 Load: 42.1 t ADT: 3,922

SR 542

Good

Over: BR INDIAN CR

4.19 MI E OF JCT. SR 39, Carroll, OH

Built 2020 Load: 42.1 t ADT: 1,100

Pebble Road

Good

Over: stream

0.25 mile south of CR16, Carroll, OH

Built 2014 Load: 42.1 t ADT: 209

SR 542

Good

Over: HUFF RUN

3.25 MILES S JCT SR 183, Carroll, OH

Built 2021 Load: 45.0 t ADT: 1,100

S.R. 43

Good

Over: PIPE RUN

1.23 MI. S. OF JCT. SR183, Carroll, OH

Built 1961 Load: 46.3 t ADT: 7,428

SR 39 & SR 212

Good

Over: THOMPSONS RUN

0.05 MI S OF JCT SR212, Carroll, OH

Built 1926 Load: 47.3 t ADT: 3,466

SR 43

Good

Over: BR PIPE RUN

1.22 MI.N. OF JCT. SR 17, Carroll, OH

Built 1994 Load: 48.6 t ADT: 7,428

COUNTY RD 15

Good

Over: PIPES RUN HIBBETS BN12

700 FT EAST OF ST RT 43, Carroll, OH

Built 2014 Load: 48.6 t ADT: 1,022

COUNTY RD 22

Good

Over: MCGUIRE CREEK PRESTON 36

100 WEST OF DEER RD, Carroll, OH

Built 1970 Load: 49.2 t ADT: 110

BROWN TWP 222

Good

Over: BIG SANDY CREEK BN 091

1500 FT EAST OF CCO 32, Carroll, OH

Built 2001 Load: 50.9 t ADT: 432

SR43

Good

Over: BR PIPE RUN

2.37 MI. S. OF JCT SR183, Carroll, OH

Built 1961 Load: 51.8 t ADT: 7,428

COUNTY RD 27

Poor

Over: CENTER FORK DRAKE BN04

.5 MI EAST OF CCO 12, Carroll, OH

Built 1960 Load: 19.4 t ADT: 373

CO RD 14

Poor

Over: STILL FORK CR. BN18

500 ST SOUTH OF CCO 18, Carroll, OH

Built 1950 Load: 22.7 t ADT: 88

ORANGE TWP 111

Poor

Over: CONNOTTON CR HADORN BN07

800 FT WEST OF STRT 164, Carroll, OH

Built 1955 Load: 22.7 t ADT: 324

MON TWP RD 158

Poor

Over: INDIAN FORK EASTERDOY 30

500 FT NORTH OF ST RT 39, Carroll, OH

Built 1975 Load: 22.7 t ADT: 209

GRANT BOULIVARD

Poor

Over: BIG SANDY CREEK

0.1 MI. E. OF JCT. SR183, Carroll, OH

Built 1964 Load: 23.3 t ADT: 250

ROSE TWP RD 180

Poor

Over: BIG SANDY BR RRARCH BN35

1500 FT WEST OF STRT 542, Carroll, OH

Built 1910 Load: 32.4 t ADT: 209

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.