County profile · official public datasets

Warren County, OH

336 public highway bridges tracked in the FHWA National Bridge Inventory: 58.6% rated Good, 36% Fair, 5.4% Poor.

336
Public bridges
58.6%
Good condition
5.4%
Poor condition

The verdict

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

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

53rd
of 88 on Poor share
5.4%
Poor-condition share
336
public highway bridges
1981
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.

Warren County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Warren County ranks #53 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.4%). Warren County, Ohio contains 336 public highway bridges. Roughly 58.6% are rated “Good,” 36% “Fair,” and 5.4% “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

336

Public highway bridges in Warren County

Good condition

58.6%

197 of 336 rated 7-9

Fair condition

36%

121 of 336 rated 5-6

Poor condition

5.4%

18 of 336 rated 4 or below

In-state Poor-share rank

#53 of 88

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

Condition distribution

Share of 336 NBI-tracked bridges by lowest applicable component rating.

Good
58.6% (197)
Fair
36% (121)
Poor
5.4% (18)

Warren County's Poor-condition bridges carry 42,688 vehicle crossings a day

That is 1.5% of the county's reported daily bridge traffic on 5.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,372 crossings a day against 9,618 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 336 of 336 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

39.9% of Warren County's bridges have passed the 50-year mark

134 of the 336 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 58.6% 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 38.5% of the county's Poor-condition bridge traffic

US 22 over BEAR RUN, built 1938, carries 16,452 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 18-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 42,688 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Warren County's bridges were built

336 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 70 of the county's bridges still in the inventory were built, which is 20.8% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1981) matches the Ohio average (1977).

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

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

The 5 Ohio counties nearest Warren County in number of bridges, with their condition splits. Its 5.4% Poor share is the 6th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1977 is in line with the group.

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

Bridge inventory size and condition shares for Warren County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Mahoning County 348 4.9%
Greene County 344 2.9%
Clark County 340 0%
Tuscarawas County 336 2.4%
Warren County (this page) 336 5.4%
Mercer County 329 2.7%

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

Similar inventory size

Nearest county inventories outside OH (336 bridges here).

Similar average build year

Nearest mean year-built outside OH (1981 here).

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

All 336 Good 197 Fair 121 Poor 18

Fair-condition bridges (121)

COLUMBIA ROAD

Fair

Over: BRANCH OF BIG MUDDY

0.04 mi E of M 38, Warren, OH

Built 1962 Load: 32.7 t ADT: 5,359

MASON-MORROW-MILLG

Fair

Over: MUDDY CREEK

0.03 mi N of CR 15, Warren, OH

Built 1962 Load: 32.7 t ADT: 7,785

ROBINSON-VAIL ROAD

Fair

Over: BR. OF DICKS CREEK

0.43 N of SR 122, Warren, OH

Built 1994 Load: 32.7 t ADT: 2,227

OLD S.R. 122

Fair

Over: CLEAR CREEK

0.49 mi W of TR 42, Warren, OH

Built 1981 Load: 32.7 t ADT: 4,041

JAMESON LANE

Fair

Over: TURTLE CREEK

0.2 MI SE of E Main St, Warren, OH

Built 1984 Load: 34.3 t ADT: 289

US 42

Fair

Over: NEWMAN RUN

.72 MI S OF JCT SR 73, Warren, OH

Built 1959 Load: 35.6 t ADT: 4,382

NB IR 71

Fair

Over: ABANDONED RAILWAY

1.4 MI N OF SR 741, Warren, OH

Built 1965 Load: 35.6 t ADT: 31,629

SR73

Fair

Over: TRIB CLEAR CRK(TWIN CRK)

1 MI E OF JCT NB IR75, Warren, OH

Built 1971 Load: 35.6 t ADT: 28,465

SR73

Fair

Over: LITTLE MIAMI RIVER

0.3 MI E OF JCT US42, Warren, OH

Built 1952 Load: 35.6 t ADT: 6,570

OREGONIA ROAD

Fair

Over: FLAT FORK

0.5 mi E of CR 268, Warren, OH

Built 1973 Load: 35.6 t ADT: 841

STUBBS MILLS ROAD

Fair

Over: LITTLE MIAMI RIVER

0.51 mi N of US RT 22, Warren, OH

Built 1969 Load: 35.6 t ADT: 2,686

BEAL ROAD

Fair

Over: GANDER RUN

0.40 mi W of TR 124, Warren, OH

Built 1971 Load: 35.6 t ADT: 983

LUDLUM ROAD

Fair

Over: BIG FOOT RUN

0.12 mi E of CR 43, Warren, OH

Built 1977 Load: 35.6 t ADT: 926

EDWARDSVILLE ROAD

Fair

Over: SHARPS RUN

0.60 mi E of CR 45, Warren, OH

Built 1945 Load: 35.6 t ADT: 313

OREGONIA ROAD

Fair

Over: HAWLEYS RUN

0.11 mi W of TR 93, Warren, OH

Built 1978 Load: 35.6 t ADT: 1,132

GREENTREE ROAD

Fair

Over: REEDERS RUN

0.11 mi W of SR 123, Warren, OH

Built 1979 Load: 35.6 t ADT: 2,560

VOLKERDING ROAD

Fair

Over: FIRST CREEK

0.13 mi N of CR 27, Warren, OH

Built 1980 Load: 35.6 t ADT: 351

HALLSCREEK ROAD

Fair

Over: HALLS CREEK

0.59 mi S of TR 39, Warren, OH

Built 1981 Load: 35.6 t ADT: 324

RED LION-FIVE POIN

Fair

Over: CLEAR CREEK

0.02 mi N of CR 41, Warren, OH

Built 1989 Load: 35.6 t ADT: 1,666

FAIRVIEW DR

Fair

Over: WEAVERS RUN

305 FT E OF MAPLE AVE, Warren, OH

Built 1995 Load: 35.6 t ADT: 2,540

EDWARDSVILLE ROAD

Fair

Over: LICK RUN

1.01 mi E of SR 123, Warren, OH

Built 1974 Load: 36.6 t ADT: 306

SECOND STREET

Fair

Over: GREAT MIAMI RIVER

CITY OF FRANKLIN, Warren, OH

Built 1933 Load: 37.9 t ADT: 11,410

SR 73

Fair

Over: CORWIN ROAD

.5 MI E OF US 42, Warren, OH

Built 1952 Load: 38.9 t ADT: 6,570

MAINEVILLE ROAD

Fair

Over: SALT RUN

0.61 mi N of TR 144, Warren, OH

Built 1977 Load: 38.9 t ADT: 951

BUNNELL HILL

Fair

Over: CLEAR CREEK

0.06 mi S of CR 22, Warren, OH

Built 1974 Load: 38.9 t ADT: 2,627

CARTER-HOWELL

Fair

Over: SECOND CREEK

0.24 mi W of SR 132, Warren, OH

Built 1985 Load: 38.9 t ADT: 54

S EAST STREET

Fair

Over: TRB TURTL CR (BAINUMS CR

At Deerfield Road, Warren, OH

Built 1991 Load: 41.5 t ADT: 11,006

SB IR 71

Fair

Over: TURTLE CR T72(TURTCR RD)

.8 MI S OF SR 48, Warren, OH

Built 1965 Load: 42.1 t ADT: 31,629

NB IR 71

Fair

Over: TURTLE CR T72(TURTCR RD)

.8 MI S OF SR 48, Warren, OH

Built 1965 Load: 42.1 t ADT: 31,629

MORROW-WOODVILLE

Fair

Over: FIRST CREEK

0.09 mi S of CR 27, Warren, OH

Built 1976 Load: 42.1 t ADT: 90

MIDDLEBORO ROAD

Fair

Over: SHARPS RUN

0.18 mi S of CR 196, Warren, OH

Built 1967 Load: 42.1 t ADT: 691

WESTERN ROW ROAD

Fair

Over: UNION RUN

0.33 mi E of M 15, Warren, OH

Built 1970 Load: 42.1 t ADT: 4,237

HAMILTON ROAD

Fair

Over: LITTLE MUDDY CREEK

0.19 mi W of CR 21, Warren, OH

Built 1979 Load: 42.1 t ADT: 5,535

LOWER SPRINGBORO

Fair

Over: DEARTHS RUN

0.01 mi W of TR 117, Warren, OH

Built 1979 Load: 42.1 t ADT: 1,960

MASON-MORROW-MILLG

Fair

Over: TURTLE CREEK

0.17 mi W of SR 48, Warren, OH

Built 1980 Load: 42.1 t ADT: 7,785

COZADDALE-MURDOCH

Fair

Over: GROG RUN

0.99 mi E of CR 153, Warren, OH

Built 1982 Load: 42.1 t ADT: 1,649

JACKSON-RUNYAN

Fair

Over: MARTIN RUN

0.06 mi S of CR 24, Warren, OH

Built 1984 Load: 42.1 t ADT: 324

WARD-KOEBEL ROAD

Fair

Over: GUM RUN

0.14 mi S of CR 7, Warren, OH

Built 1986 Load: 42.1 t ADT: 324

US 42

Fair

Over: TRB TURTL CR(BAINUMS CR)

.7 MI S OF SR 63, Warren, OH

Built 1989 Load: 45.4 t ADT: 6,134

NB IR 71

Fair

Over: C15(C38);MUDDY CREEK

1.2 MI N OF SR 741, Warren, OH

Built 1964 Load: 45.4 t ADT: 31,629

HAMILTON ROAD

Fair

Over: LITTLE MUDDY CREEK

0.46 mi E of CR 21, Warren, OH

Built 1966 Load: 45.4 t ADT: 1,363

MASON-MORROW-MILLG

Fair

Over: GRAYS RUN

0.19 mi E of TR 84, Warren, OH

Built 1930 Load: 45.4 t ADT: 639

WAYNESVILLE ROAD

Fair

Over: DRY RUN

0.54 mi S of TR 39, Warren, OH

Built 1971 Load: 45.4 t ADT: 763

TOWNSHIP LINE ROAD

Fair

Over: BRANCH OF NEWMANS RUN

0.13 mi N of CR 22, Warren, OH

Built 1997 Load: 45.4 t ADT: 2,477

OSCEOLA ROAD

Fair

Over: SUGAR RUN

0.04 mi S of SR 132, Warren, OH

Built 1978 Load: 45.4 t ADT: 351

COLLINS-RILEY ROAD

Fair

Over: LICK RUN

0.92 mi N of SR 123, Warren, OH

Built 1981 Load: 45.4 t ADT: 324

PENCE-JONES ROAD

Fair

Over: BR OF LITTLE MIAMI RIVER

0.14 mi W of CR 237, Warren, OH

Built 1970 Load: 48.6 t ADT: 351

VILLAS CREEK DR.

Fair

Over: MUDDY CREEK BRANCH

300 S OF TYLERSVILLE RD, Warren, OH

Built 1997 Load: 48.6 t ADT: 200

INNOVATION WAY

Fair

Over: UNION RUN STREAM

0.3 MI S OF WESTERN ROW, Warren, OH

Built 1985 Load: 48.6 t ADT: 200

TOWNE BLVD

Fair

Over: NORTH BR OF DICKS CREEK

INT WITH DIXIE HWY, Warren, OH

Built 1975 Load: 48.6 t ADT: 9,225

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.