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)

CROSS COUNTY

Good

Over: CR86-----(LIVINGSTON RD)

1.12 Mi E of 275, Hamilton, OH

Built 1975 Load: 82.3 t ADT: 9,706

FALLIS ROAD

Good

Over: TRIB LITTLE MIAMI RIVER

50 EAST OF OHIO STREET, Hamilton, OH

Built 2001 Load: 83.9 t ADT: 3,377

SPRINDALE ROAD

Good

Over: TRIBUTARY TO MILLCREEK

AT GOLFVIEW DRIVE, Hamilton, OH

Built 1916 Load: 84.9 t ADT: 4,999

ELM STREET

Good

Over: ABANDONED RR--TPK(ELM RD

1.12 MI NE OF WOOSTER, Hamilton, OH

Built 1927 Load: 87.5 t ADT: 2,100

KEMPER ROAD

Good

Over: REED HARTMAN HIGHWAY

5.27 MI. E. OF S.R. 4, Hamilton, OH

Built 2001 Load: 89.7 t ADT: 21,573

E. GALBRAITH ROAD

Good

Over: WEST FORK OF MILL CREEK

.92 MI E OF CORP LINE, Hamilton, OH

Built 1950 Load: 91.0 t ADT: 10,061

COLUMBIA AVENUE

Good

Over: MILLCREEK

.29 MI NW OF HUNT RD, Hamilton, OH

Built 1986 Load: 92.0 t ADT: 4,900

ROSEALTA LANE

Good

Over: SAND RUN CREEK

360 N. OF LAWRENCEBURG, Hamilton, OH

Built 1999 Load: 93.0 t ADT: 451

YEATMAN ROAD

Good

Over: CREEK

.48 MI E OF DUNLAP RD, Hamilton, OH

Built 1973 Load: 95.9 t ADT: 477

CROSS COUNTY

Good

Over: CR86-----(LIVINGSTON RD)

1.12 Mi E of 275, Hamilton, OH

Built 1975 Load: 96.6 t ADT: 9,706

EAST FORK AVENUE

Poor

Over: LITTLE DUCK CREEK

100 E OF INT PLAINVIL&MA, Hamilton, OH

Built 1952 Load: 13.0 t ADT: 4,974

WESTERN HILLS VIAD

Poor

Over: Mill Creek State Sprin

620 ft W of Central Pkwy, Hamilton, OH

Built 1931 Load: 13.0 t ADT: 43,788

Brighton Approach

Poor

Over: US27(US52 US127)

1.3 MI S OF US 127, Hamilton, OH

Built 1925 Load: 16.2 t ADT: 8,150

WINTON ROAD

Poor

Over: WINTON WOODS PARK DRIVE

8.44 MI N OF SPRING GROVE, Hamilton, OH

Built 1969 Load: 18.5 t ADT: 40,186

KEMPER ROAD

Poor

Over: B AND O RAILROAD

.38 MI E OF KENN RD, Hamilton, OH

Built 1929 Load: 19.4 t ADT: 29,543

Beerman Road

Poor

Over: Brierly Creek Branch

0.05 Mi N of Hanley Rd, Hamilton, OH

Built 1910 Load: 25.6 t ADT: 1,158

RAPID RUN RD

Poor

Over: RAPID RUN CREEK

3400 FT E OF EBENEZER RD, Hamilton, OH

Built 1938 Load: 26.2 t ADT: 10,761

HARRIS AVENUE

Poor

Over: DUCK CREEK

80 FT. S OF DUCK CREEK RD, Hamilton, OH

Built 1900 Load: 26.2 t ADT: 200

NB IR 75

Poor

Over: MILL CR;BENSON ST;NSRR;S

2.3 MI S OF SR 126, Hamilton, OH

Built 1965 Load: 27.9 t ADT: 67,075

US 50

Poor

Over: WHITEWATER RIVER

WHITEWATER RIVER, Hamilton, OH

Built 1941 Load: 28.2 t ADT: 12,104

SR 562

Poor

Over: ROSS AVENUE;CSRR CR689

.3 MI E OF US 42, Hamilton, OH

Built 1972 Load: 29.2 t ADT: 58,705

US 42

Poor

Over: OHIO RIVER CLAY BAILEY

OVER OHIO RIVER, Hamilton, OH

Built 1974 Load: 32.4 t ADT: 13,531

US50

Poor

Over: NSRR;DUCKCRK;RED BANK RD

1.4 MI E OF SR561, Hamilton, OH

Built 1962 Load: 32.4 t ADT: 17,030

WB IR 74

Poor

Over: CR 184;TRIB TAYLOR CREEK

1.4 MI E OF SR 128, Hamilton, OH

Built 1964 Load: 32.4 t ADT: 36,784

IR 75

Poor

Over: TRIBUTARY MILL CREEK

.3 MI N OF IR 275, Hamilton, OH

Built 1960 Load: 32.4 t ADT: 91,244

WB IR 275

Poor

Over: NORFOLK SOUTHERN RR; US5

OVER US 50, Hamilton, OH

Built 1976 Load: 32.4 t ADT: 15,977

DEBOLT ROAD

Poor

Over: CLEAR CREEK (DEBOLT RD.)

.6 MI N OF SR32, Hamilton, OH

Built 1938 Load: 32.7 t ADT: 1,397

WM HOWARD TAFT

Poor

Over: PRIVATE TUNNEL

AT I-71 WM H TAFT OVPASS, Hamilton, OH

Built 1900 Load: 32.7 t ADT: 5,863

WESLEY AVE

Poor

Over: SR 562

.2 MI E OF USR 22, Hamilton, OH

Built 1970 Load: 35.3 t ADT: 1,949

GLENDALE MILFORD

Poor

Over: NORFOLK SOUTHERN RR-SORT

0.5 MI E OF IR 75, Hamilton, OH

Built 1960 Load: 38.9 t ADT: 24,750

WB IR 275

Poor

Over: CR 299(LOVELAND RD);IORY

2.6 MI E OF US 22, Hamilton, OH

Built 1970 Load: 48.6 t ADT: 35,701

EB IR 275

Poor

Over: CR 299(LOVELAND RD);IORY

2.6 MI E OF US 22, Hamilton, OH

Built 1970 Load: 48.6 t ADT: 35,701

EIGHTH STREET

Poor

Over: MILL CREEK RR EVANS ST

Viaduct W OF INT DALTON, Hamilton, OH

Built 1929 Load: 51.8 t ADT: 4,917

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
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.