County profile · official public datasets

Beaver County, PA

299 public highway bridges tracked in the FHWA National Bridge Inventory: 41.1% rated Good, 48.8% Fair, 10% Poor.

299
Public bridges: 41.1%
Good condition: 10%
Poor condition

The verdict

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

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

Top 39%
lowest Poor share in state: 10%
Poor-condition share: 299
public highway bridges: 1972
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.

Beaver County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Beaver County ranks #26 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10%). Beaver County, Pennsylvania contains 299 public highway bridges. Roughly 41.1% are rated “Good,” 48.8% “Fair,” and 10% “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

299

Public highway bridges in Beaver County

Good condition

41.1%

123 of 299 rated 7-9

Fair condition

48.8%

146 of 299 rated 5-6

Poor condition

10%

30 of 299 rated 4 or below

In-state Poor-share rank

#26 of 67

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

Condition distribution

Share of 299 NBI-tracked bridges by lowest applicable component rating.

Good

41.1% (123)

Fair

48.8% (146)

Poor

10% (30)

Beaver County's Poor-condition bridges carry 136,827 vehicle crossings a day

That is 7.3% of the county's reported daily bridge traffic on 9.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 4,887 crossings a day against 3,302 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 297 of 299 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

54.5% of Beaver County's bridges have passed the 50-year mark

163 of the 299 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 41.1% 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 16.6% of the county's Poor-condition bridge traffic

PA TPK (I-76) over SR 1001 BEAVER RIV RR, built 1952, carries 22,663 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 30-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 136,827 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

5
1900s

6
1910s

2
1920s

11
1930s

19
1940s

9
1950s

51
1960s

48
1970s

27
1980s

25
1990s

25
2000s

20
2010s

49
2020s

2

What this shows Construction peaked in the 1950s, when 51 of the county's bridges still in the inventory were built, which is 17.1% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1972) matches the Pennsylvania average (1970).

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

The 5 Pennsylvania counties nearest Beaver County in number of bridges, with their condition splits. Its 10% Poor share is the 3rd-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1967 is 5 years newer.

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

Bridge inventory size and condition shares for Beaver County and the 5 Pennsylvania counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Greene County	306	37.3%	46.7%	16%	1967
Indiana County	301	29.9%	51.2%	18.9%	1972
Northumberland County	299	41.8%	51.5%	6.7%	1963
Beaver County (this page)	299	41.1%	48.8%	10%	1972
Franklin County	294	29.6%	62.2%	8.2%	1964
Clearfield County	292	38.4%	47.6%	14%	1971

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

Similar inventory size

Nearest county inventories outside PA (299 bridges here).

Ada County, ID · 299 bridges
DeKalb County, AL · 300 bridges
Christian County, KY · 300 bridges
Washington County, MD · 300 bridges

Similar average build year

Nearest mean year-built outside PA (1972 here).

Santa Clara County, CA · avg 1972 · 964 bridges
Madison County, AL · avg 1972 · 710 bridges
Kern County, CA · avg 1972 · 668 bridges
Middlesex County, NJ · avg 1972 · 563 bridges

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

All 299 Good 123 Fair 146 Poor 30

Fair-condition bridges (146)

Sort:

Beaver County Bridge Snapshot

Condition distribution

Beaver County's Poor-condition bridges carry 136,827 vehicle crossings a day

54.5% of Beaver County's bridges have passed the 50-year mark

One structure carries 16.6% of the county's Poor-condition bridge traffic

How Beaver 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

Fair-condition bridges (146)

FAIRLANE BL

SHEFFIELD AVE

PARISH RD

HARKENS MILL RD

MERCHANT ST

NICHOL ROAD

Mill Street

ROCHESTER MONACA

BEAVER-ROCHESTE

RAMP G RD

T-609

PARK ACCESS RD

Constitution Blvd.

PINE GROVE RD

LIBERTY AVENUE

PENNSYLVANIA AV

OHIO RIVER BL

SHIPPINGPORT HI RD

PA TPK (I-76)

TWP ROUTE-544 RT

PINE GROVE RD

SR 168

CHAPEL RD

Homewood Viaduct

BEAVER VALLEY EXPY

WALLACE CITY RD

PA TPK (I-76)

WOLF RUN RD

GEORGETOWN LN

WOLF RUN RD

RAMP-G RD

RAMP A

PENNSYLVANIA AVE

AMB-ALIQUIP BRIDG

PENNSYLVANIA AV

EASTVALE BRIDGE

PARK RD

WALNUT LN

SR 0376 EB

ALLEGHENY STREET

RNR-ACCESS RD

Glendale Road

CONSTITUTION BL

CONCORD CHURCH RD

RACCOON CREEK RD

T-561

McElhaney Road

SUNFLOWER RD

PA TPK ( I-376)

WILLOWMERE PARK RD

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