County profile · official public datasets

McKean County, PA

226 public highway bridges tracked in the FHWA National Bridge Inventory: 43.8% rated Good, 37.6% Fair, 18.6% Poor.

226
Public bridges: 43.8%
Good condition: 18.6%
Poor condition

The verdict

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

McKean County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

58th
of 67 on Poor share: 18.6%
Poor-condition share: 226
public highway bridges: 1979
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.

McKean County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, McKean County ranks #58 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 18.6%). McKean County, Pennsylvania contains 226 public highway bridges. Roughly 43.8% are rated “Good,” 37.6% “Fair,” and 18.6% “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

226

Public highway bridges in McKean County

Good condition

43.8%

99 of 226 rated 7-9

Fair condition

37.6%

85 of 226 rated 5-6

Poor condition

18.6%

42 of 226 rated 4 or below

In-state Poor-share rank

#58 of 67

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

Condition distribution

Share of 226 NBI-tracked bridges by lowest applicable component rating.

Good

43.8% (99)

Fair

37.6% (85)

Poor

18.6% (42)

McKean County's Poor-condition bridges carry 24,316 vehicle crossings a day

That is 7% of the county's reported daily bridge traffic on 18.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 593 crossings a day against 1,859 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 225 of 226 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

39.8% of McKean County's bridges have passed the 50-year mark

90 of the 226 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 43.8% 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 19.6% of the county's Poor-condition bridge traffic

SR 4013 over BOLIVAR RUN, built 1936, carries 4,769 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 42-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 24,316 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

2
1900s

4
1910s

7
1920s

7
1930s

10
1940s

11
1950s

20
1960s

22
1970s

24
1980s

14
1990s

25
2000s

28
2010s

44
2020s

8

What this shows Construction peaked in the 2010s, when 44 of the county's bridges still in the inventory were built, which is 19.5% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year is 1979, 9 years newer than the Pennsylvania average of 1970.

How McKean County compares with Pennsylvania's closest counties by inventory size

The 5 Pennsylvania counties nearest McKean County in number of bridges, with their condition splits. Its 18.6% Poor share is the 6th-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1974 is 5 years newer.

Showing the 5 closest of 66 Pennsylvania counties eligible for comparison.

Bridge inventory size and condition shares for McKean County and the 5 Pennsylvania counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Huntingdon County	238	41.6%	47.5%	10.9%	1966
Lebanon County	228	28.9%	62.3%	8.8%	1971
McKean County (this page)	226	43.8%	37.6%	18.6%	1979
Warren County	217	36.4%	45.2%	18.4%	1974
Clinton County	212	42.9%	54.7%	2.4%	1978
Potter County	207	44.9%	42%	13%	1979

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

Similar inventory size

Nearest county inventories outside PA (226 bridges here).

Faribault County, MN · 226 bridges
Oktibbeha County, MS · 226 bridges
Beaverhead County, MT · 226 bridges
Columbus County, NC · 226 bridges

Similar average build year

Nearest mean year-built outside PA (1979 here).

Pima County, AZ · avg 1979 · 1,150 bridges
Jefferson County, KY · avg 1979 · 662 bridges
Spartanburg County, SC · avg 1979 · 638 bridges
McPherson County, KS · avg 1979 · 586 bridges

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

All 226 Good 99 Fair 85 Poor 42

Poor-condition bridges (42)

Sort:

McKean County Bridge Snapshot

Condition distribution

McKean County's Poor-condition bridges carry 24,316 vehicle crossings a day

39.8% of McKean County's bridges have passed the 50-year mark

One structure carries 19.6% of the county's Poor-condition bridge traffic

How McKean County compares with Pennsylvania's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Poor-condition bridges (42)

T-437 DELMAR ROAD

T-499 CLARKS LANE

DAVIS STREET

CAMPUS DRIVE

T-389 SARTWELL RD

T-385 VALLEY CROSS

T-402 CADY RUN RD

T-349 BORDELL RD

T387 BERGER HOLLOW

FR 186

T-362 WEST VALLEY

T-384 BROOKLYN ST

ARNOLD AVENUE

BARBOUR ST

LANGLEY DRIVE

T-576 BJ ROAD

T433 BARBERTOWN RD

T-336 HIGH STREET

NORTH 4TH STREET

WILLARD AVENUE

T-300 WEST KANE RD

SR 246-PA 246

SR 4011

T408 LOWER PORTAGE

T-374 CLARK STREET

SR 46-PA 46

SR 646-PA 646

SR 246-PA 246

SR 346-PA 346

SR 3003

SR 46-PA 46

SR 4013

SR 6-US 6

SR 346-PA 346

SR 3002

T-375 CROSBY CROSS

ON TSR 405

SR 1006

T615 CROOKERHOUSE

T-470 GARDEAU ROAD

HARRISBURG RUN RD

T325 MARVINDALE RD

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