County profile · official public datasets

Hamilton County, OH

783 public highway bridges tracked in the FHWA National Bridge Inventory: 57.5% rated Good, 39.6% Fair, 2.9% Poor.

783
Public bridges
57.5%
Good condition
2.9%
Poor condition

The verdict

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

Hamilton 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 43%
lowest Poor share in state
2.9%
Poor-condition share
783
public highway bridges
1970
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.

Hamilton County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Hamilton County ranks #38 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.9%). Hamilton County, Ohio contains 783 public highway bridges. Roughly 57.5% are rated “Good,” 39.6% “Fair,” and 2.9% “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

783

Public highway bridges in Hamilton County

Good condition

57.5%

450 of 783 rated 7-9

Fair condition

39.6%

310 of 783 rated 5-6

Poor condition

2.9%

23 of 783 rated 4 or below

In-state Poor-share rank

#38 of 88

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

Condition distribution

Share of 783 NBI-tracked bridges by lowest applicable component rating.

Good
57.5% (450)
Fair
39.6% (310)
Poor
2.9% (23)

Hamilton County's Poor-condition bridges carry 561,488 vehicle crossings a day

That is 3.3% of the county's reported daily bridge traffic on 2.9% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 24,413 crossings a day against 22,584 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 782 of 783 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

60.2% of Hamilton County's bridges have passed the 50-year mark

471 of the 783 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 57.5% 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 16.3% of the county's Poor-condition bridge traffic

IR 75 over TRIBUTARY MILL CREEK, built 1960, carries 91,244 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 23-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 561,488 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Hamilton County's bridges were built

783 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 193 of the county's bridges still in the inventory were built, which is 24.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1970, 7 years older than the Ohio average of 1977.

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

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

The 5 Ohio counties nearest Hamilton County in number of bridges, with their condition splits. Its 2.9% Poor share is the 4th-lowest of these 6. Its average build year of 1970 against a peer-group mean of 1977 is 7 years older.

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

Bridge inventory size and condition shares for Hamilton County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Franklin County 922 2%
Cuyahoga County 871 9.6%
Hamilton County (this page) 783 2.9%
Montgomery County 632 2.7%
Summit County 563 2.3%
Wood County 508 4.3%

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

Similar inventory size

Nearest county inventories outside OH (783 bridges here).

Similar average build year

Nearest mean year-built outside OH (1970 here).

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

All 783 Good 450 Fair 310 Poor 23

All bridges (783)

Bridge Point Pass

Good

Over: South Fork Taylors Creek

0.00 MI. E. OF WESSELMAN, Hamilton, OH

Built 2007 Load: 38.9 t ADT: 2,227

AARON RAINES LN

Good

Over: CSXT RAILROAD

ALONGSIDE W 8TH ST, Hamilton, OH

Built 2009 Load: 38.9 t ADT: 1,000

ELM STREET

Good

Over: PETE ROSE WAY & PARKING

SOUTH OF 2ND & ELM INT., Hamilton, OH

Built 2000 Load: 38.9 t ADT: 11,731

US50

Good

Over: CONRAIL RAILROAD;US50

.83 MI EAST OF SR 264, Hamilton, OH

Built 1960 Load: 39.2 t ADT: 1,457

SR 126 EAST BOUND

Good

Over: WEST FORK OF MILL CREEK

0.9 MILE EAST OF US 27, Hamilton, OH

Built 1996 Load: 39.2 t ADT: 16,342

SR 126 EB

Good

Over: CR 219 (CALDWELL DR.)

0.17 MI W. OF SR 4, Hamilton, OH

Built 1992 Load: 39.2 t ADT: 27,214

CR 453

Good

Over: USR 27

2.3 MI S OF IR 275, Hamilton, OH

Built 1975 Load: 39.2 t ADT: 28,716

PFEIFFER ROAD

Good

Over: NORTH BRANCH SYCAMORE CR

.71 MI E OF PLAINFIELD RD, Hamilton, OH

Built 1969 Load: 39.2 t ADT: 20,317

SR 126 WEST BOUND

Good

Over: WEST FORK OF MILL CREEK

0.9 MILES EAST OF US 27, Hamilton, OH

Built 1996 Load: 39.5 t ADT: 16,342

IR 75

Good

Over: FINDLAY STREET

1.4 MI N OF SR 264, Hamilton, OH

Built 1961 Load: 39.5 t ADT: 143,847

SHEED ROAD

Good

Over: SCHNAPPS CREEK

2.93 MI N OF HARRISON AVE, Hamilton, OH

Built 1955 Load: 39.9 t ADT: 4,443

US42

Good

Over: I275

OVER I275, Hamilton, OH

Built 1960 Load: 40.2 t ADT: 21,242

WB IR 74

Good

Over: CR 151(SHEPHERDCREEK RD)

2.8 MI E OF US 27, Hamilton, OH

Built 1970 Load: 40.5 t ADT: 22,997

IR 75

Good

Over: BANK STREET

1.3 MI S OF US 52, Hamilton, OH

Built 1961 Load: 40.5 t ADT: 143,847

Baughman Road

Good

Over: Unnamed Creek

0.25 Mi N of New Haven Rd, Hamilton, OH

Built 1972 Load: 40.5 t ADT: 451

Baughman Road

Good

Over: Unnamed Creek

0.63 Mi N of New Haven Rd, Hamilton, OH

Built 1972 Load: 40.5 t ADT: 451

SHEED ROAD

Good

Over: SCHNAPPS CREEK(SHEED RD)

2.57 MI N OF HARRISON AVE, Hamilton, OH

Built 1922 Load: 40.5 t ADT: 4,443

E. MIAMI RIVER RD.

Good

Over: DUNLAP CREEK

14.64 MI N OF RIVER RD, Hamilton, OH

Built 1953 Load: 40.5 t ADT: 787

CR 220 (DALY RD)

Good

Over: SR126

0.7 MI WEST OF WINTON RD, Hamilton, OH

Built 1996 Load: 40.8 t ADT: 20,186

OAKWOOD PK. DR.

Good

Over: WULFF RUN CK.(OAKWOOD PK

.009 MI. S. OF DELHI RD., Hamilton, OH

Built 1988 Load: 40.8 t ADT: 1,949

BOBOLINK DR CR67

Good

Over: SR 126

0.2 MI WEST OF DALY ROAD, Hamilton, OH

Built 1996 Load: 41.1 t ADT: 248

SR 126 EB

Good

Over: CR 233 (RIDGEWAY AVE.)

0.6 MI W. OF SR 4, Hamilton, OH

Built 1992 Load: 41.1 t ADT: 27,214

WILLEY ROAD

Good

Over: HOWARD CREEK

0.22 MI N OF NEW HAVEN RD, Hamilton, OH

Built 1986 Load: 41.1 t ADT: 1,021

US 50

Good

Over: LITTLE MIAMI RIVER

LITTLE MIAMI IN MILFORD, Hamilton, OH

Built 1980 Load: 41.5 t ADT: 13,924

DRY FORK ROAD

Good

Over: LEES CREEK

BETW. WEST - NEW HAVEN RD, Hamilton, OH

Built 1918 Load: 41.5 t ADT: 3,938

S.R. 126

Good

Over: GALBRAITH RD.

2.2 MI WEST OF I-75, Hamilton, OH

Built 1993 Load: 41.8 t ADT: 19,536

WB Elberon Ramp

Good

Over: Elberon Ave Ramp

junctions with US 50, Hamilton, OH

Built 2014 Load: 41.8 t ADT: 1,295

OXFORD ROAD

Good

Over: OXFORD CREEK

0.59 MI N OF NEW HAVEN, Hamilton, OH

Built 1925 Load: 41.8 t ADT: 797

US52 (Hopple Str)

Good

Over: IR75

US52 and IR75, Hamilton, OH

Built 2014 Load: 42.1 t ADT: 25,969

US 50

Good

Over: GREAT MIAMI RIVER

0.03 MI. E. OF SR 128, Hamilton, OH

Built 1991 Load: 42.1 t ADT: 9,907

US50 EB

Good

Over: CSRR;NSRR;MILL CR;PRIV D

1.2 MI W OF I75, Hamilton, OH

Built 1965 Load: 42.1 t ADT: 23,928

US 50

Good

Over: RELIEF

E OF MARTINE DRIVE, Hamilton, OH

Built 2004 Load: 42.1 t ADT: 20,490

2ND STREET

Good

Over: CENTRAL AVENUE

RAMPS TO 2ND ST, Hamilton, OH

Built 2001 Load: 42.1 t ADT: 27,975

IR71 Ramp

Good

Over: Martin Luther King

1.4 MI North of US42, Hamilton, OH

Built 2017 Load: 42.1 t ADT: 11,550

SERVICE ROAD

Good

Over: Service Rd Ov MILL CR

SW OF IR75 AND 126 INT, Hamilton, OH

Built 1986 Load: 42.1 t ADT: 156,804

SHEPHERD LANE

Good

Over: IR75

1.3 MI S OF SR 126, Hamilton, OH

Built 2020 Load: 42.1 t ADT: 2,377

SR 561 (Seymour A

Good

Over: I-75

OVER I-75, Hamilton, OH

Built 2018 Load: 42.1 t ADT: 9,040

Marburg Ave

Good

Over: Wasson Way

S of Wasson Rd, Hamilton, OH

Built 2017 Load: 42.1 t ADT: 13,895

RACE ROAD

Good

Over: CR163(WESTWOOD NORTHERN)

.60 MI N OF BRIDGETOWN RD, Hamilton, OH

Built 1956 Load: 42.1 t ADT: 10,451

Cheviot Road

Good

Over: RR Cross Cnty Hwy -C0453

2.58 MI SE OF NEW HAVEN, Hamilton, OH

Built 1975 Load: 42.1 t ADT: 13,642

NORTH BEND RD

Good

Over: MILL CREEK

0.7MI.W. OF VINE ST., Hamilton, OH

Built 1995 Load: 42.1 t ADT: 8,887

HARRIS AVENUE

Good

Over: DUCK CREEK

500 FT S OF DUCK CREEK RD, Hamilton, OH

Built 1985 Load: 42.1 t ADT: 200

IDA STREET

Good

Over: WAREHAM STREET

0.1 MI N OF MONASTERY ST, Hamilton, OH

Built 1931 Load: 42.1 t ADT: 10,316

KENTON STREET

Good

Over: FLORENCE AVENUE

AT INT GILBERT & KENTON, Hamilton, OH

Built 1998 Load: 42.1 t ADT: 10,316

MOCKINGBIRD RD T92

Good

Over: SR-126

0.4 MI W.OF WINTON ROAD, Hamilton, OH

Built 1995 Load: 42.4 t ADT: 1,949

BLUE ASH RD.

Good

Over: STATE ROUTE 126

0.82 MILES WEST OF I-71, Hamilton, OH

Built 1964 Load: 42.4 t ADT: 7,533

SR 126

Good

Over: I-75/MILL CREEK

WB SR126 OVER NB I-75, Hamilton, OH

Built 1990 Load: 42.4 t ADT: 6,865

WESSELMAN ROAD

Good

Over: CREEK

3.10 MI NW OF EBENEZER RD, Hamilton, OH

Built 1929 Load: 42.4 t ADT: 2,227

MILES ROAD

Good

Over: W. BRANCH OF MILL CREEK

2.41 MI. E. OF MILL ROAD, Hamilton, OH

Built 2007 Load: 42.4 t ADT: 1,945

ELM STREET

Good

Over: CREEK (ELM RD)

350 FT EAST OF WOOSTER PK, Hamilton, OH

Built 1997 Load: 42.4 t ADT: 800

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.