County profile · official public datasets

Franklin County, OH

922 public highway bridges tracked in the FHWA National Bridge Inventory: 72.2% rated Good, 25.8% Fair, 2% Poor.

922
Public bridges
72.2%
Good condition
2%
Poor condition

The verdict

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

Franklin County posts a top-quartile lowest Poor-condition share among rated counties in the state across large county bridge inventory.

Top 23%
lowest Poor share in state
2%
Poor-condition share
922
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.

Franklin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Franklin County ranks #20 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2%). Franklin County, Ohio contains 922 public highway bridges. Roughly 72.2% are rated “Good,” 25.8% “Fair,” and 2% “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

922

Public highway bridges in Franklin County

Good condition

72.2%

666 of 922 rated 7-9

Fair condition

25.8%

238 of 922 rated 5-6

Poor condition

2%

18 of 922 rated 4 or below

In-state Poor-share rank

#20 of 88

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

Condition distribution

Share of 922 NBI-tracked bridges by lowest applicable component rating.

Good
72.2% (666)
Fair
25.8% (238)
Poor
2% (18)

Franklin County's Poor-condition bridges carry 223,837 vehicle crossings a day

That is 0.9% of the county's reported daily bridge traffic on 2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 12,435 crossings a day against 28,432 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 922 of 922 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

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

427 of the 922 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 72.2% 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 27.3% of the county's Poor-condition bridge traffic

I-70 over IR 70W OVER SCIOTO RIVER, built 1975, carries 61,022 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 223,837 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Franklin County's bridges were built

922 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 214 of the county's bridges still in the inventory were built, which is 23.2% of those with a recorded year. That cohort is now 55 to 64 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 Franklin County compares with Ohio's closest counties by inventory size

The 5 Ohio counties nearest Franklin County in number of bridges, with their condition splits. Its 2% Poor share is the 1st-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1975 is 6 years newer.

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

Bridge inventory size and condition shares for Franklin County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Franklin County (this page) 922 2%
Cuyahoga County 871 9.6%
Hamilton County 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 Franklin 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 Franklin County, both outside Ohio so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside OH (922 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 922 Good 666 Fair 238 Poor 18

Poor-condition bridges (18)

WEST SELBY BLVD.

Poor

Over: RUSH RUN

0.13 MILE W. OF US-23, Franklin, OH

Built 1982 Load: 13.0 t ADT: 300

KIMBERLY PARKWAY

Poor

Over: (O) MASON RUN

300 FT E/COURTRIGHT RD, Franklin, OH

Built 1972 Load: 16.2 t ADT: 3,006

THIRD ST

Poor

Over: S 3RD (US-33) OVER I-70

0.82 E OF SR 3, Franklin, OH

Built 1963 Load: 29.2 t ADT: 9,065

FRANK RD

Poor

Over: EARLY RUN(FRANK RD)

0.2 MI WEST OF GANTZ RD, Franklin, OH

Built 1973 Load: 29.2 t ADT: 17,009

RAMP TO 270WB

Poor

Over: IR-71

0.53 MI N OF SR710, Franklin, OH

Built 1966 Load: 30.8 t ADT: 12,651

FOURTH ST (US23)

Poor

Over: S 4TH ST(US-23) OVER I-7

1.59 MI S OF IR-670, Franklin, OH

Built 1964 Load: 32.4 t ADT: 18,223

HIGH STREET

Poor

Over: S HIGH ST(US23D) OV I70

0.1 MI E OF FRONT ST, Franklin, OH

Built 1964 Load: 32.4 t ADT: 5,851

I-70

Poor

Over: IR 70W OVER SCIOTO RIVER

0.21 MI E OF I-71, Franklin, OH

Built 1975 Load: 32.4 t ADT: 61,022

BRICE RD

Poor

Over: IR-70

1.19 MI E OF I-270, Franklin, OH

Built 1967 Load: 32.4 t ADT: 5,209

I-270

Poor

Over: S INDIAN RUN

0.33 MI N OF US33, Franklin, OH

Built 1968 Load: 32.4 t ADT: 57,982

GANTZ RD

Poor

Over: IR 270

0.96 MI N OF I-71, Franklin, OH

Built 1968 Load: 32.4 t ADT: 7,515

HARRIS-GEORGES. RD

Poor

Over: BIG DARBY (HARRIS-GEORGE

0.25 MI. SOUTH OF S.R.665, Franklin, OH

Built 1932 Load: 32.4 t ADT: 2,210

REESE RD

Poor

Over: BIG WALNUT CR(REESE RD)

0.23 MI SOUTH OF RATHMELL, Franklin, OH

Built 1909 Load: 32.4 t ADT: 1,397

WRIGHT RD

Poor

Over: PICKERING CREEK (WRIGHT)

AT BOWEN RD, Franklin, OH

Built 1939 Load: 32.4 t ADT: 1,397

SCIOTO DARBY CR.RD

Poor

Over: BIG DARBY (SCIOTO DARBY)

0.15 MI WEST OF AMITY RD, Franklin, OH

Built 1986 Load: 32.4 t ADT: 11,541

BEACH ROAD

Poor

Over: BIG DARBY CR (BEACH RD)

W. OF AMITY ON CNTY. LINE, Franklin, OH

Built 2001 Load: 32.4 t ADT: 385

DEMPSEY RD

Poor

Over: SPRING RUN (DEMPSEY)

0.5 MI WEST OF SUNBURY RD, Franklin, OH

Built 1994 Load: 34.3 t ADT: 8,961

WYNNE RIDGE COURT

Poor

Over: BEEM DITCH

S. OF RIDGE CREST, Franklin, OH

Built 1995 Load: 45.4 t ADT: 113

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.