County profile · official public datasets

Perry County, PA

183 public highway bridges tracked in the FHWA National Bridge Inventory: 32.2% rated Good, 53.6% Fair, 14.2% Poor.

183
Public bridges
32.2%
Good condition
14.2%
Poor condition

The verdict

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

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

45th
of 67 on Poor share
14.2%
Poor-condition share
183
public highway bridges
1965
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.

Perry County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Perry County ranks #45 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 14.2%). Perry County, Pennsylvania contains 183 public highway bridges. Roughly 32.2% are rated “Good,” 53.6% “Fair,” and 14.2% “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

183

Public highway bridges in Perry County

Good condition

32.2%

59 of 183 rated 7-9

Fair condition

53.6%

98 of 183 rated 5-6

Poor condition

14.2%

26 of 183 rated 4 or below

In-state Poor-share rank

#45 of 67

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

Condition distribution

Share of 183 NBI-tracked bridges by lowest applicable component rating.

Good
32.2% (59)
Fair
53.6% (98)
Poor
14.2% (26)

Perry County's Poor-condition bridges carry 39,787 vehicle crossings a day

That is 8.5% of the county's reported daily bridge traffic on 14.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,530 crossings a day against 1,750 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 183 of 183 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

63.4% of Perry County's bridges have passed the 50-year mark

116 of the 183 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 32.2% 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 46.3% of the county's Poor-condition bridge traffic

US 11&15; STATE.RD over FISHING CREEK, built 1936, carries 18,406 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 26-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 39,787 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Perry County's bridges were built

183 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 33 of the county's bridges still in the inventory were built, which is 18% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1965, 5 years older than the Pennsylvania average of 1970.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Pennsylvania counties nearest Perry County in number of bridges, with their condition splits. Its 14.2% Poor share is the 5th-lowest of these 6. Its average build year of 1965 against a peer-group mean of 1971 is 6 years older.

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

Bridge inventory size and condition shares for Perry County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Jefferson County 202 6.9%
Mifflin County 196 12.8%
Venango County 189 14.8%
Perry County (this page) 183 14.2%
Clarion County 172 8.1%
Juniata County 169 13.6%

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

Similar inventory size

Nearest county inventories outside PA (183 bridges here).

Similar average build year

Nearest mean year-built outside PA (1965 here).

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

All 183 Good 59 Fair 98 Poor 26

Poor-condition bridges (26)

CENTER RD

Poor

Over: BIXLER RUN

0.5 MI SE BIXLERS RUN, Perry, PA

Built 1905 Load: 7.3 t ADT: 50

BARKLEY ROAD

Poor

Over: MCCABE RUN

2 SW BRIDGEPORT/MCCABE RU, Perry, PA

Built 1977 Load: 10.9 t ADT: 75

ERNEST RD

Poor

Over: MONTOUR CREEK

1 NW LANDISBURG/MONTOUR, Perry, PA

Built 1940 Load: 11.8 t ADT: 100

KENNEDY VALLEY RD

Poor

Over: MCCABE RUN

2.5 SW BRIDGEPORT/MACCABE, Perry, PA

Built 1977 Load: 13.6 t ADT: 105

SR 3016; TWP RD

Poor

Over: TRIB SHERMANS CREEK

2 MI.S.W. OF SHERMANSDALE, Perry, PA

Built 1918 Load: 16.3 t ADT: 647

SR 1024

Poor

Over: BUFFALO CREEK

1 MI NORTH OF NEWPORT, Perry, PA

Built 1938 Load: 20.0 t ADT: 148

PA 74; SR 0074

Poor

Over: BAKEN CREEK

NEAR ALINDA, Perry, PA

Built 1959 Load: 20.9 t ADT: 1,835

Pine hill rd. 3021

Poor

Over: SHERMANS CREEK

1 MI NORTH OF LEBO, Perry, PA

Built 1910 Load: 23.6 t ADT: 107

SR 3001

Poor

Over: SHULTZ CREEK

AT CENTER SQUARE, Perry, PA

Built 1950 Load: 24.5 t ADT: 50

BOOK ROAD

Poor

Over: BULL RUN

1.5 SE BLAIN BULL RUN, Perry, PA

Built 1950 Load: 24.5 t ADT: 75

SR 1012

Poor

Over: WILDCAT RUN

2.5 MI.S.W. MILLERSTOWN, Perry, PA

Built 1948 Load: 25.4 t ADT: 368

SR 3013

Poor

Over: BIXLERS RUN

2 MI N OF FORT ROBINSON, Perry, PA

Built 1933 Load: 27.2 t ADT: 128

SR 4005

Poor

Over: LITTLE BUFFALO CREEK

3MI N OF NEW BLOOMFIELD, Perry, PA

Built 1938 Load: 28.1 t ADT: 708

SR 1015

Poor

Over: COCOLAMUS CREEK

1.5 MI S OF MILLERSTOWN, Perry, PA

Built 1925 Load: 29.0 t ADT: 3,540

SOUTH MAIN ST.

Poor

Over: FISHING CREEK

MARYSVILLE BORO/FISHNG CR, Perry, PA

Built 1933 Load: 29.9 t ADT: 450

SR 3011; TWP RD

Poor

Over: LAUREL RUN

2 MI W OF LANDISBURG, Perry, PA

Built 1949 Load: 30.8 t ADT: 1,222

MIDDLE RIDGE RD

Poor

Over: BIG BUFFALO CREEK

1 MI W OF ESHCOL, Perry, PA

Built 1949 Load: 30.8 t ADT: 785

PA 17&850; SR 0017

Poor

Over: BRANCH BIXLER RUN

KISTLER, Perry, PA

Built 1935 Load: 31.8 t ADT: 698

LAUREL RUN RD

Poor

Over: LAUREL RUN

4.5 SW LANDISBURG/LAUREL, Perry, PA

Built 1923 Load: 31.8 t ADT: 75

PA 34; SR 0034

Poor

Over: LITTLE BUFFALO CREEK

NEWPORT BORO, Perry, PA

Built 1929 Load: 32.7 t ADT: 7,806

SHENANDOAH RD

Poor

Over: BIG BUFFALO CREEK

3 NE KISTLER/BIG BUFFALO, Perry, PA

Built 1965 Load: 32.7 t ADT: 25

SR 3011; TWP RD

Poor

Over: SHERMANS CREEK

1 MI SOUTH OF LOYSVILLE, Perry, PA

Built 1962 Load: 37.3 t ADT: 1,222

Hidden Valley Rd

Poor

Over: SHERMAN CREEK

1 MI SOUTH OF LOYSVILLE, Perry, PA

Built 1910 Load: 40.8 t ADT: 284

STONE ARCH RD.

Poor

Over: TRIB BUFFALO CREEK

1 MI W OF WILA, Perry, PA

Built 1948 Load: 43.5 t ADT: 231

US 11&15; STATE.RD

Poor

Over: FISHING CREEK

MARYSVILLE BORO, Perry, PA

Built 1936 Load: 46.3 t ADT: 18,406

SR 3016; TWP RD

Poor

Over: TRIB SHERMANS CREEK

1 MI W OF SHERMANDALE, Perry, PA

Built 1919 Load: 48.1 t ADT: 647

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.