County profile · official public datasets

Ashtabula County, OH

305 public highway bridges tracked in the FHWA National Bridge Inventory: 72.5% rated Good, 23.9% Fair, 3.6% Poor.

305
Public bridges: 72.5%
Good condition: 3.6%
Poor condition

The verdict

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

Ashtabula 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 47%
lowest Poor share in state: 3.6%
Poor-condition share: 305
public highway bridges: 1967
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.

Ashtabula County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Ashtabula County ranks #41 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.6%). Ashtabula County, Ohio contains 305 public highway bridges. Roughly 72.5% are rated “Good,” 23.9% “Fair,” and 3.6% “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

305

Public highway bridges in Ashtabula County

Good condition

72.5%

221 of 305 rated 7-9

Fair condition

23.9%

73 of 305 rated 5-6

Poor condition

3.6%

11 of 305 rated 4 or below

In-state Poor-share rank

#41 of 88

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

Condition distribution

Share of 305 NBI-tracked bridges by lowest applicable component rating.

Good

72.5% (221)

Fair

23.9% (73)

Poor

3.6% (11)

Ashtabula County's Poor-condition bridges carry 4,622 vehicle crossings a day

That is 0.7% of the county's reported daily bridge traffic on 3.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 462 crossings a day against 2,453 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 304 of 305 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

54.8% of Ashtabula County's bridges have passed the 50-year mark

167 of the 305 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 72.5% 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 21.5% of the county's Poor-condition bridge traffic

SR 193 over BR PYMATUNING CREEK, built 1961, carries 995 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 11-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,622 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

5
1900s

33
1910s

2
1920s

6
1930s

5
1940s

17
1950s

33
1960s

58
1970s

32
1980s

24
1990s

36
2000s

25
2010s

23
2020s

6

What this shows Construction peaked in the 1960s, when 58 of the county's bridges still in the inventory were built, which is 19% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1967, 10 years older than the Ohio average of 1977.

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

The 5 Ohio counties nearest Ashtabula County in number of bridges, with their condition splits. Its 3.6% Poor share is the 2nd-lowest of these 6. Its average build year of 1967 against a peer-group mean of 1977 is 10 years older.

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

Bridge inventory size and condition shares for Ashtabula County and the 5 Ohio counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Huron County	311	58.2%	33.8%	8%	1982
Belmont County	310	52.3%	42.6%	5.2%	1982
Athens County	309	54%	39.2%	6.8%	1975
Washington County	309	61.2%	32.4%	6.5%	1974
Ashtabula County (this page)	305	72.5%	23.9%	3.6%	1967
Sandusky County	303	71%	27.1%	2%	1974

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

Similar inventory size

Nearest county inventories outside OH (305 bridges here).

Coffey County, KS · 305 bridges
La Paz County, AZ · 306 bridges
Adair County, IA · 306 bridges
Greene County, PA · 306 bridges

Similar average build year

Nearest mean year-built outside OH (1967 here).

Los Angeles County, CA · avg 1967 · 3,547 bridges
Allegheny County, PA · avg 1967 · 1,294 bridges
Sonoma County, CA · avg 1967 · 609 bridges
Merced County, CA · avg 1967 · 528 bridges

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

All 305 Good 221 Fair 73 Poor 11

All bridges (305)

Sort:

SHAFFER ROAD

Fair

Over: GRAND RIVER

2.35 MI. E. OF CH9, Ashtabula, OH

Built 1913 Load: 35.6 t ADT: 96

SOUTH DENMARK ROAD

Fair

Over: MILLS CREEK

1500 W. OF CLAY ROAD, Ashtabula, OH

Built 1900 Load: 38.2 t ADT: 267

21ST STREET TR 399

Fair

Over: SR 11

0.83 MI S OF SR 531, Ashtabula, OH

Built 1963 Load: 38.9 t ADT: 4,143

SR 45

Fair

Over: THREE BROTHERS CREEK

5.80 MI N OF US 6, Ashtabula, OH

Built 1978 Load: 38.9 t ADT: 3,815

SR 167

Fair

Over: OVER ATB-SR 11-17.41

JCT OF SR 167 AND SR 11, Ashtabula, OH

Built 1975 Load: 38.9 t ADT: 2,959

PLYMOUTH RIDGE RD

Fair

Over: SR 11

0.81 MI S OF SR 84, Ashtabula, OH

Built 1961 Load: 39.2 t ADT: 1,097

MEADE HOLLOW ROAD

Fair

Over: HOSKINS CREEK

.35 MI. E. OF HURLBURT RD, Ashtabula, OH

Built 1976 Load: 40.8 t ADT: 385

SR 45

Fair

Over: THREE BROTHERS CREEK

5.50 MI N OF US 6, Ashtabula, OH

Built 1978 Load: 42.1 t ADT: 3,815

SCHWEITZER ROAD

Fair

Over: BRONSON CREEK

.55 MI. E. OF CH9, Ashtabula, OH

Built 1974 Load: 42.1 t ADT: 324

SOUTH WINDSOR EXT.

Fair

Over: PHELPS CREEK

.6 MI. E. OF SR534, Ashtabula, OH

Built 1986 Load: 42.1 t ADT: 96

HILLDOM ROAD

Fair

Over: ASHTABULA RIVER

.1 MI. E. OF CH33, Ashtabula, OH

Built 1950 Load: 45.4 t ADT: 285

EASTWOOD STREET

Fair

Over: COWLES CREEK

900 FT. E. SR534, Ashtabula, OH

Built 1950 Load: 47.0 t ADT: 100

KEEFUS ROAD

Fair

Over: CONNEAUT CREEK

0.4MI. S. OF US20, Ashtabula, OH

Built 1988 Load: 47.3 t ADT: 150

US 6

Fair

Over: GRAND RIVER

1.50 MI W OF SR 45, Ashtabula, OH

Built 1986 Load: 48.6 t ADT: 2,705

CENTER ROAD

Fair

Over: CONNEAUT CREEK

0.3 MI S OF JCT SR20, Ashtabula, OH

Built 1900 Load: 50.5 t ADT: 600

SCHRAMBLING ROAD

Fair

Over: ASHTABULA RIVER W BRANCH

1.35 MI. E. OF CH33, Ashtabula, OH

Built 1900 Load: 51.8 t ADT: 209

UNDERWOOD ROAD

Fair

Over: PYMATUNING CREEK

.3 MI. E. OF KIDDLE ROAD, Ashtabula, OH

Built 1900 Load: 51.8 t ADT: 324

E 24TH STREET

Fair

Over: ASHTABULA RIVER

.2 mi NE of Lake & 24th, Ashtabula, OH

Built 1965 Load: 58.3 t ADT: 5,750

TUTTLE ROAD

Fair

Over: COWLES CREEK

1000 S. OF SR84, Ashtabula, OH

Built 1900 Load: 68.0 t ADT: 209

PYMATUNING LAKE RD

Fair

Over: MC MICHAEL CREEK

.5 MI. N. OF US322, Ashtabula, OH

Built 1969 Load: 70.3 t ADT: 610

FENKEL ROAD

Fair

Over: GRAVEL RUN

.83MI EAST OF SR7, Ashtabula, OH

Built 1957 Load: 71.0 t ADT: 305

NORTH RICHMOND RD

Fair

Over: ASHTABULA RIVER

.2 MI. E. OF CH33, Ashtabula, OH

Built 1900 Load: 71.3 t ADT: 248

HALL ROAD

Fair

Over: ASHTABULA RIVER E BRANCH

.9 MI. E. OF SR7, Ashtabula, OH

Ashtabula County Bridge Snapshot

Condition distribution

Ashtabula County's Poor-condition bridges carry 4,622 vehicle crossings a day

54.8% of Ashtabula County's bridges have passed the 50-year mark

One structure carries 21.5% of the county's Poor-condition bridge traffic

How Ashtabula 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 (305)

SHAFFER ROAD

SOUTH DENMARK ROAD

21ST STREET TR 399

SR 45

SR 167

PLYMOUTH RIDGE RD

MEADE HOLLOW ROAD

SR 45

SCHWEITZER ROAD

SOUTH WINDSOR EXT.

HILLDOM ROAD

EASTWOOD STREET

KEEFUS ROAD

US 6

CENTER ROAD

SCHRAMBLING ROAD

UNDERWOOD ROAD

E 24TH STREET

TUTTLE ROAD

PYMATUNING LAKE RD

FENKEL ROAD

NORTH RICHMOND RD

HALL ROAD

CREEK ROAD

DOYLE ROAD

DEWEY ROAD

BENETKA ROAD

LAFEVRE RD TR-136

CLYDE HILL ROAD

STATE LINE RD

SR 46

FORMAN ROAD

SR 7

SEXTON ROAD CR-218

SR 534

STANHOPE KELL. RD

STATE ROAD

SR 534

OLD SR7 CARTER RD.

I.R. 90

MARCY ROAD

US 20

SR 84

I.R. 90

KEEFUS ROAD CR 421

DORMAN ROAD MR-295

SR 167

WINDSOR MECH. ROAD

FOOTVILLE RICHMOND

WINDSOR MECH. ROAD

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