County profile · official public datasets

Washington County, OH

309 public highway bridges tracked in the FHWA National Bridge Inventory: 61.2% rated Good, 32.4% Fair, 6.5% Poor.

309
Public bridges
61.2%
Good condition
6.5%
Poor condition

The verdict

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

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

61st
of 88 on Poor share
6.5%
Poor-condition share
309
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.

Washington County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Washington County ranks #61 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.5%). Washington County, Ohio contains 309 public highway bridges. Roughly 61.2% are rated “Good,” 32.4% “Fair,” and 6.5% “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

309

Public highway bridges in Washington County

Good condition

61.2%

189 of 309 rated 7-9

Fair condition

32.4%

100 of 309 rated 5-6

Poor condition

6.5%

20 of 309 rated 4 or below

In-state Poor-share rank

#61 of 88

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

Condition distribution

Share of 309 NBI-tracked bridges by lowest applicable component rating.

Good
61.2% (189)
Fair
32.4% (100)
Poor
6.5% (20)

Washington County's Poor-condition bridges carry 26,457 vehicle crossings a day

That is 4% of the county's reported daily bridge traffic on 6.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,392 crossings a day against 1,812 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 308 of 309 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

46.3% of Washington County's bridges have passed the 50-year mark

143 of the 309 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 61.2% 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 42.4% of the county's Poor-condition bridge traffic

MR-476 MEMORIAL TO over OHIO R. CSX KEEVER ST., built 1955, carries 11,215 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 20-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 26,457 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Washington County's bridges were built

309 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 61 of the county's bridges still in the inventory were built, which is 19.7% 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 Washington County compares with Ohio's closest counties by inventory size

The 5 Ohio counties nearest Washington County in number of bridges, with their condition splits. Its 6.5% Poor share is the 3rd-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1978 is in line with the group.

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

Bridge inventory size and condition shares for Washington County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Miami County 315 7%
Huron County 311 8%
Belmont County 310 5.2%
Athens County 309 6.8%
Washington County (this page) 309 6.5%
Ashtabula County 305 3.6%

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

Similar inventory size

Nearest county inventories outside OH (309 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 309 Good 189 Fair 100 Poor 20

Poor-condition bridges (20)

POMEROY PIKE

Poor

Over: RAILROAD

0.4 M W- SR32&SR618 MAIN, Washington, OH

Built 1911 Load: 0.0 t

TOWNSHIP ROAD 921

Poor

Over: L MUSKINGUM * HUNE CVR

.05 MI E OF JCT SR 26, Washington, OH

Built 1879 Load: 2.7 t ADT: 209

TOWNSHIP ROAD 570

Poor

Over: BR WOLF CK * SHINN CVR

0.15mi S of TR91, Washington, OH

Built 1886 Load: 8.2 t ADT: 209

TOWNSHIP ROAD 559

Poor

Over: REYNOLDS RUN * MURPH

.25 MI N OF JCT SR 7, Washington, OH

Built 1969 Load: 9.7 t ADT: 209

TOWNSHIP ROAD 75

Poor

Over: DUCK CREEK * STEVEN

.01 MI E OF JCT SR 821, Washington, OH

Built 1914 Load: 9.7 t ADT: 15

TOWNSHIP ROAD 32

Poor

Over: BR MUSKINGUM * SCHIMME

2.62 MI NW OF JCT C H 60, Washington, OH

Built 1980 Load: 16.2 t ADT: 233

COUNTY ROAD 111

Poor

Over: L HOCKING * MARTI

4.65 MI E OF JCT CO RD 26, Washington, OH

Built 1963 Load: 19.4 t ADT: 403

TOWNSHIP ROAD 298

Poor

Over: B&O * RAILROA

.54 MI W OF JCT SR 124, Washington, OH

Built 1970 Load: 19.4 t ADT: 324

SR 60

Poor

Over: BIG RUN

3.77M N OF JCT SR 530, Washington, OH

Built 1983 Load: 23.3 t ADT: 4,724

MR-476 MEMORIAL TO

Poor

Over: OHIO R. CSX KEEVER ST.

.1 MI E OF SR-618, Washington, OH

Built 1955 Load: 25.9 t ADT: 11,215

COUNTY ROAD 27

Poor

Over: TUPPER CK * ROCKY POIN

.72 MI E OF JCT SR 339, Washington, OH

Built 1973 Load: 25.9 t ADT: 246

COUNTY ROAD 2

Poor

Over: E BR WOLF CK * MARTI

11.81 MI N OF JCT SR 7, Washington, OH

Built 1984 Load: 25.9 t ADT: 127

SR 7

Poor

Over: MILL CREEK

1.35M S MONROE CO. LINE, Washington, OH

Built 1961 Load: 28.8 t ADT: 3,024

TOWNSHIP ROAD 15

Poor

Over: L HOCKING * TEL HAL

3.47 MI E OF JCT SR 555, Washington, OH

Built 1977 Load: 29.2 t ADT: 1,151

COUNTY ROAD 9

Poor

Over: EIGHTMILE CK * EIGHTMIL

3.87 MI EAST OF JCT SR 7, Washington, OH

Built 1971 Load: 32.4 t ADT: 1,624

COUNTY ROAD 348

Poor

Over: MILL RUN * CLIN

.60 MI N OF JCT CO RD 20, Washington, OH

Built 1983 Load: 32.4 t ADT: 504

TOWNSHIP ROAD 443

Poor

Over: NEWELLS RUN * MUD LAN

.37 MI N OF JCT SR 7, Washington, OH

Built 1974 Load: 32.4 t ADT: 797

COUNTY ROAD 4

Poor

Over: BR RAINBOW CK HENDERSHO

10.19 MI NW OF JCT SR 7, Washington, OH

Built 1984 Load: 33.7 t ADT: 331

COUNTY ROAD 79

Poor

Over: BR RAINBOW CK * HUC

3.82 MI N OF JCT CO RD 4, Washington, OH

Built 1980 Load: 35.6 t ADT: 180

COUNTY ROAD 60

Poor

Over: MUSKINGUM * LOWELL T A

.08 MI S OF JCT SR 60, Washington, OH

Built 1976 Load: 36.3 t ADT: 932

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.