County profile · official public datasets

Summit County, OH

563 public highway bridges tracked in the FHWA National Bridge Inventory: 55.4% rated Good, 42.3% Fair, 2.3% Poor.

563
Public bridges: 55.4%
Good condition: 2.3%
Poor condition

The verdict

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

Summit County posts a better-than-median Poor-condition share among rated counties in the state across large county bridge inventory.

Top 30%
lowest Poor share in state: 2.3%
Poor-condition share: 563
public highway bridges: 1974
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.

Summit County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Summit County ranks #26 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.3%). Summit County, Ohio contains 563 public highway bridges. Roughly 55.4% are rated “Good,” 42.3% “Fair,” and 2.3% “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

563

Public highway bridges in Summit County

Good condition

55.4%

312 of 563 rated 7-9

Fair condition

42.3%

238 of 563 rated 5-6

Poor condition

2.3%

13 of 563 rated 4 or below

In-state Poor-share rank

#26 of 88

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

Condition distribution

Share of 563 NBI-tracked bridges by lowest applicable component rating.

Good

55.4% (312)

Fair

42.3% (238)

Poor

2.3% (13)

Summit County's Poor-condition bridges carry 72,154 vehicle crossings a day

That is 0.7% of the county's reported daily bridge traffic on 2.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 5,550 crossings a day against 19,294 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 563 of 563 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

60.6% of Summit County's bridges have passed the 50-year mark

341 of the 563 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 55.4% 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 22.8% of the county's Poor-condition bridge traffic

MAIN ST. over CSX & CONRAIL (101), built 1938, carries 16,475 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 13-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 72,154 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

2
1910s

2
1920s

10
1930s

39
1940s

12
1950s

85
1960s

134
1970s

78
1980s

31
1990s

50
2000s

58
2010s

47
2020s

15

What this shows Construction peaked in the 1960s, when 134 of the county's bridges still in the inventory were built, which is 23.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1974) matches the Ohio average (1977).

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

The 5 Ohio counties nearest Summit County in number of bridges, with their condition splits. Its 2.3% Poor share is the 3rd-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1984 is 10 years older.

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

Bridge inventory size and condition shares for Summit County and the 5 Ohio counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Montgomery County	632	67.2%	30.1%	2.7%	1981
Summit County (this page)	563	55.4%	42.3%	2.3%	1974
Wood County	508	64.2%	31.5%	4.3%	1980
Darke County	463	82.9%	16.6%	0.4%	1985
Licking County	439	57.2%	35.1%	7.7%	1988
Lucas County	418	74.4%	23.7%	1.9%	1984

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

Similar inventory size

Nearest county inventories outside OH (563 bridges here).

Shawnee County, KS · 563 bridges
Middlesex County, NJ · 563 bridges
Linn County, OR · 566 bridges
Larimer County, CO · 559 bridges

Similar average build year

Nearest mean year-built outside OH (1974 here).

Knox County, TN · avg 1974 · 588 bridges
Onondaga County, NY · avg 1974 · 472 bridges
Orange County, NY · avg 1974 · 472 bridges
Pierce County, WA · avg 1974 · 472 bridges

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

All 563 Good 312 Fair 238 Poor 13

All bridges (563)

Sort:

Summit County Bridge Snapshot

Condition distribution

Summit County's Poor-condition bridges carry 72,154 vehicle crossings a day

60.6% of Summit County's bridges have passed the 50-year mark

One structure carries 22.8% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (563)

I-76

SR 241

BOSTON MILLS RD

TPK EXIT 180 RAMP

SR8 SB TPK RAMP

HAZEL ST

S MAIN STREET

VAN BUREN CO RD 60

STATE ROAD

THORNTON ST C647

NAUTILUS

SR 8

CLINTON DRIVE

HIGHLAND RD

BRANDYWINE RD

IR76 RAMP OV SWEIT

IR76

I.R. 77

IR 76

IR 76

RAMP E27 OVER RR

IR 271

PROSPECT RD

MEMORIAL PKWY

RIDGEWOOD RD

HARRINGTON ROAD

RAVENNA RD - CR 12

NORTHAMPTON RD

Ravenna Road

E. MILL STREET

CARNEGIE AVENUE

BLACKBERRY DRIVE

BRANDYWINE DRIVE

ATTERBURY BLVD

I.R. 77

Pressler Road

US 224

HINES HILL RD

SR 8 NB TO I-271 N

I.R. 77

I.R. 77

I76/BDWY SWEITZ

I.R. 77

I-76

I80 OH TPK

HUDSON RUN RD

MEDINA LINE RD.

Vanderhoof Road

SOUTH MAIN ST

IRA RD

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