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)

GLENDALE MILFORD

Fair

Over: MILL CREEK

.1 MI W OF US 42, Hamilton, OH

Built 1960 Load: 77.8 t ADT: 17,497

LAKEVIEW DRIVE

Fair

Over: LOCUST CREEK

200 FT W OF CARSLBAD, Hamilton, OH

Built 1957 Load: 77.8 t ADT: 500

MUCHMORE ROAD

Fair

Over: TRIBUTARY WALTON CREEK

.17 MI NW OF WALTON CREEK, Hamilton, OH

Built 1977 Load: 79.4 t ADT: 1,949

CORBLEY ROAD

Fair

Over: CLOUGH CREEK

1.19 MI NE OF BEECHMONT, Hamilton, OH

Built 1959 Load: 86.5 t ADT: 9,238

BLUE ROCK ROAD

Fair

Over: BLUE ROCK CREEK

2.03 MI SE OF NEW HAVEN, Hamilton, OH

Built 1938 Load: 87.2 t ADT: 4,078

KILBY ROAD

Fair

Over: DRY FORK CREEK

BETW. CILLEY - DRY FORK, Hamilton, OH

Built 1925 Load: 88.1 t ADT: 9,579

COMPTON ROAD

Fair

Over: WEST FORK OF MILL CREEK

1.25 MI E OF COLERAIN AVE, Hamilton, OH

Built 1958 Load: 90.4 t ADT: 11,107

FOREST ROAD

Fair

Over: CREEK (FOREST RD)

1.09 M E of Beechmont, Hamilton, OH

Built 1900 Load: 90.4 t ADT: 7,165

KUGLER MILL ROAD

Fair

Over: CREEK-INH(KUGIER MILL RD

3.13 MI SE OF MONTGOMERY, Hamilton, OH

Built 1934 Load: 92.0 t ADT: 17,070

NEWTOWN ROAD

Fair

Over: RECREATIONAL CORRIDOR

2.93 M N of Clough, Hamilton, OH

Built 1984 Load: 96.6 t ADT: 29,269

IR75 off Rmp CLOSD

Good

Over: CLOSED-CENTRAL AVENUE

W.OF CENTRAL BETW.3 & 4, Hamilton, OH

Built 2000 Load: 0.0 t

FIVE MILE ROAD

Good

Over: FIVE MILE CREEK

1.71 MI NE OF KELLOGG AVE, Hamilton, OH

Built 1953 Load: 12.6 t ADT: 7,123

WYOMING AVE CR-708

Good

Over: SB IR75

.75 MI S OF SHEPHERD LN, Hamilton, OH

Built 1994 Load: 16.5 t ADT: 4,131

RACE ST.

Good

Over: IR 71

FWW .5KM FROM OH RIVER, Hamilton, OH

Built 2000 Load: 16.8 t ADT: 2,398

ELM ST.

Good

Over: I 71

FWW .5KM FROM OH RIVER, Hamilton, OH

Built 2000 Load: 17.8 t ADT: 11,731

OLD COLERAIN RD

Good

Over: GREAT MIAMI RIVER (COL)

4.04 Mi E of 128, Hamilton, OH

Built 1900 Load: 18.5 t ADT: 4,665

WALNUT ST.

Good

Over: IR 71

FWW 1.45KM FROM O RIVER, Hamilton, OH

Built 2000 Load: 18.8 t ADT: 5,643

CHESTERDALE RD

Good

Over: I275

.3 MI W OF IR 75, Hamilton, OH

Built 1960 Load: 19.4 t ADT: 100

WB IR 275

Good

Over: LIT. MIAMI RIVER;BIKEWAY

3 MI W OF US 22, Hamilton, OH

Built 1971 Load: 19.4 t ADT: 35,701

US 50

Good

Over: BROADWAY & 71NB & RAMP K

0.25MI S. LYTLE TUNNEL, Hamilton, OH

Built 1999 Load: 22.7 t ADT: 12,615

EB IR 275

Good

Over: PRIVATE DRIVES;SHARON LK

.5 MI E OF SR 42, Hamilton, OH

Built 1964 Load: 22.7 t ADT: 53,407

FIVE MILE ROAD

Good

Over: FIVE MILE CREEK

0.87 MI NE OF KELLOGG AVE, Hamilton, OH

Built 1953 Load: 22.7 t ADT: 7,123

CLOUGH RD

Good

Over: CLOUGH CREEK

500 FT SE OF BERKSHIRE RD, Hamilton, OH

Built 1992 Load: 22.7 t ADT: 27,298

FREEDOM WAY CENTRA

Good

Over: PARKING GARAGE

BETWEEN RACE & ROSA PARKS, Hamilton, OH

Built 2009 Load: 22.7 t ADT: 10,316

RIDGE RD RMP-SB71

Good

Over: RIDGE AVENUE

.6 MI N OF SR 562, Hamilton, OH

Built 1972 Load: 23.0 t ADT: 22,580

SNIDER RD C277

Good

Over: I71

1 MI N OF IR 275, Hamilton, OH

Built 1965 Load: 23.3 t ADT: 21,202

WEST ROAD

Good

Over: DRY FORK CREEK

500 EAST OF DRY FORK RD., Hamilton, OH

Built 2005 Load: 24.6 t ADT: 1,037

PIPPIN ROAD C90

Good

Over: SR 26

1.0 MILES EAST OF US 127, Hamilton, OH

Built 1996 Load: 25.3 t ADT: 20,972

Berkshire Road

Good

Over: Clough Creek Tributary

400 Ft N of Beechmont Ave, Hamilton, OH

Built 1986 Load: 25.3 t ADT: 2,000

FREEDOM WAY EAST

Good

Over: PARKING GARAGE

BTWN WALNUT & JOE NUXHALL, Hamilton, OH

Built 2009 Load: 25.6 t ADT: 10,316

US22 EB

Good

Over: CUL ST;EGGLESTON AVE.

DOWNTOWN CINCINNATI, Hamilton, OH

Built 1950 Load: 25.9 t ADT: 4,514

US 27

Good

Over: GREAT MIAMI RIVER

0.4 MI S OF HAM/BUT LINE, Hamilton, OH

Built 1970 Load: 25.9 t ADT: 11,556

US 50 EB

Good

Over: IR 75 SB AND RAMP

OVER I-75 SB, Hamilton, OH

Built 2000 Load: 25.9 t ADT: 21,300

IR71 SOUTH BOUND

Good

Over: BROADWY/71SRAMP/US50 RAM

1ST BR SOUTH OF LYTLE TUN, Hamilton, OH

Built 1999 Load: 25.9 t ADT: 29,395

MORGAN ROAD

Good

Over: I74(US52)

.9 MI W OF IR 275 WB, Hamilton, OH

Built 1962 Load: 25.9 t ADT: 2,227

IR 75

Good

Over: OVER MARSHALL STREET

.5 MI S OF US 52, Hamilton, OH

Built 2013 Load: 25.9 t ADT: 140,521

IR275 EB

Good

Over: RMP=IR275*E-IR74*EIR74*W

OVER RAMP-EB IR74, Hamilton, OH

Built 1977 Load: 25.9 t ADT: 10,974

WB IR 275

Good

Over: CR 382(SUTTON ROAD)

1 MI W OF OH-KY LINE, Hamilton, OH

Built 1976 Load: 25.9 t ADT: 21,005

EB IR 275

Good

Over: CR 382(SUTTON ROAD)

1 MI W OF OH-KY LINE, Hamilton, OH

Built 1976 Load: 25.9 t ADT: 21,005

LAWRENCEBURG ROAD

Good

Over: GREAT MIAMI RIVER

0.5 MILE EAST OF SR 50, Hamilton, OH

Built 1995 Load: 25.9 t ADT: 10,316

FIVE MILE ROAD

Good

Over: FIVE MILE CREEK

.71 MI NE OF KELLOGG AVE, Hamilton, OH

Built 1953 Load: 25.9 t ADT: 7,123

KEMPER ROAD

Good

Over: E MILL CREEK (KEMPER RD)

1.87 MI E OF KENN RD, Hamilton, OH

Built 1979 Load: 25.9 t ADT: 15,218

SECOND STREET

Good

Over: PARKING LOT

E SIDE CLAY WADE BAILEY, Hamilton, OH

Built 2001 Load: 25.9 t ADT: 40,364

I-75 7TH ST.

Good

Over: GEST ST WITHIN IR R/W

.3 MI N OF SR 264DA, Hamilton, OH

Built 1963 Load: 26.2 t ADT: 145,897

Atherton Road

Good

Over: Dry Fork Creek

0.93 Mi N of Willey Rd, Hamilton, OH

Built 1971 Load: 26.2 t ADT: 797

US 27 27D 52

Good

Over: BROADWAY ST

.4 MI E OF IR 471, Hamilton, OH

Built 1970 Load: 26.6 t ADT: 9,939

FREEDOM WAY WEST

Good

Over: PARKING GARAGE

BETWEEN ELM & RACE, Hamilton, OH

Built 2009 Load: 26.6 t ADT: 10,316

US 127

Good

Over: WEST FORK MILL CREEK

.17 MI N. OF MT HEALTHY, Hamilton, OH

Built 1994 Load: 27.5 t ADT: 21,420

HARRISON ROAD

Good

Over: BULL RUN CREEK

9.47 MI NW OF QUEEN CITY, Hamilton, OH

Built 1919 Load: 27.5 t ADT: 33,151

KOEHLER AVENUE

Good

Over: EAST FORK OF MILL CREEK

200 E OF I-75 EXIT, Hamilton, OH

Built 1999 Load: 27.9 t ADT: 1,949

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.