County profile · official public datasets

Washington County, PA

655 public highway bridges tracked in the FHWA National Bridge Inventory: 38.3% rated Good, 49.6% Fair, 12.1% Poor.

655
Public bridges
38.3%
Good condition
12.1%
Poor condition

The verdict

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

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

36th
of 67 on Poor share
12.1%
Poor-condition share
655
public highway bridges
1971
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.

Washington County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Washington County ranks #36 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 12.1%). Washington County, Pennsylvania contains 655 public highway bridges. Roughly 38.3% are rated “Good,” 49.6% “Fair,” and 12.1% “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

655

Public highway bridges in Washington County

Good condition

38.3%

251 of 655 rated 7-9

Fair condition

49.6%

325 of 655 rated 5-6

Poor condition

12.1%

79 of 655 rated 4 or below

In-state Poor-share rank

#36 of 67

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

Condition distribution

Share of 655 NBI-tracked bridges by lowest applicable component rating.

Good
38.3% (251)
Fair
49.6% (325)
Poor
12.1% (79)

Washington County's Poor-condition bridges carry 98,832 vehicle crossings a day

That is 2.7% of the county's reported daily bridge traffic on 12.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,251 crossings a day against 5,496 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 655 of 655 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

54.4% of Washington County's bridges have passed the 50-year mark

356 of the 655 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 38.3% 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 20.2% of the county's Poor-condition bridge traffic

SR 0022 over RACCOON CREEK, built 1970, carries 19,995 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 79-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 98,832 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Washington County's bridges were built

655 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 119 of the county's bridges still in the inventory were built, which is 18.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1971) matches the Pennsylvania average (1970).

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

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

The 5 Pennsylvania counties nearest Washington County in number of bridges, with their condition splits. Its 12.1% Poor share is the 1st-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1963 is 8 years newer.

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

Bridge inventory size and condition shares for Washington County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Bucks County 699 15.5%
Chester County 680 13.7%
Berks County 667 15%
Washington County (this page) 655 12.1%
Westmoreland County 620 15.8%
Philadelphia County 585 13.2%

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

Similar inventory size

Nearest county inventories outside PA (655 bridges here).

Similar average build year

Nearest mean year-built outside PA (1971 here).

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

All 655 Good 251 Fair 325 Poor 79

All bridges (655)

T-540 Day Hill Rd

Fair

Over: Crafts Creek

250 SOUTH OF SR 3035, Washington, PA

Built 1936 Load: 70.8 t ADT: 40

SR 0019

Fair

Over: LITTLE CHARTIERS CREEK

N. STRABANE & PETERS TWPS, Washington, PA

Built 1948 Load: 71.7 t ADT: 24,763

SR 0070

Fair

Over: CHARTIERS CREEK

CANTON TOWNSHIP, Washington, PA

Built 1960 Load: 71.7 t ADT: 40,511

SR 0079

Fair

Over: SR 0019

AMWELL TOWNSHIP, Washington, PA

Built 1998 Load: 73.5 t ADT: 12,664

SR 0070

Fair

Over: DUTCH FORK BUFFALO CREEK

DONEGAL TOWNSHIP, Washington, PA

Built 1961 Load: 76.2 t ADT: 14,338

CREEDMORE ROAD

Fair

Over: TRIBUTARY OF MILLERS RUN

NE OF CECIL N OF PA 50, Washington, PA

Built 1935 Load: 79.8 t ADT: 50

SR 0070

Fair

Over: DONNAN AVENUE

CITY OF WASHINGTON, Washington, PA

Built 1960 Load: 86.2 t ADT: 26,186

SR 0070

Fair

Over: CATFISH CREEK

CANTON TOWNSHIP, Washington, PA

Built 1960 Load: 89.7 t ADT: 43,891

SR 0070

Fair

Over: BR. LITTLE CHARTIERS CK.

SOUTH STRABANE TOWNSHIP, Washington, PA

Built 1960 Load: 89.7 t ADT: 25,692

SR 0070

Fair

Over: BR. PIGEON CREEK

SOMERSET TOWNSHIP, Washington, PA

Built 1956 Load: 89.7 t ADT: 27,992

SR 0070

Fair

Over: NORTH BR. PIGEON CREEK

SOMERSET TOWNSHIP, Washington, PA

Built 1956 Load: 89.7 t ADT: 27,992

SR 0019

Fair

Over: BR. LITTLE TENMILE CREEK

AMWELL TOWNSHIP, Washington, PA

Built 1965 Load: 99.8 t ADT: 2,808

SR 0019

Fair

Over: BRUSH RUN

PETERS TOWNSHIP, Washington, PA

Built 1940 Load: 99.8 t ADT: 23,832

SR 0022

Fair

Over: SAINT PATRICK RUN

ROBINSON TOWNSHIP, Washington, PA

Built 1968 Load: 99.8 t ADT: 26,066

SR 0040

Fair

Over: Out of Service CSX R/R

BUFFALO TOWNSHIP, Washington, PA

Built 1919 Load: 99.8 t ADT: 3,797

SR 0070

Fair

Over: BRANCH OF BUFFALO CREEK

BUFFALO TOWNSHIP, Washington, PA

Built 1960 Load: 99.8 t ADT: 28,637

SR 0070

Fair

Over: PIGEON CREEK

FALLOWFIELD TOWNSHIP, Washington, PA

Built 1949 Load: 99.8 t ADT: 28,172

SR 0070

Fair

Over: SOUTH BRANCH MAPLE CREEK

TWILIGHT BOROUGH, Washington, PA

Built 1952 Load: 99.8 t ADT: 26,234

SR 0088

Fair

Over: NORTH BRANCH FISHPOT RUN

EAST BETHLEHEM TOWNSHIP, Washington, PA

Built 1966 Load: 99.8 t ADT: 4,910

SR 4004

Fair

Over: LITTLE RACCOON RUN

SMITH & ROBINSON TWP., Washington, PA

Built 1928 Load: 99.8 t ADT: 4,084

SR 4004

Fair

Over: SAINT PATRICK RUN

ROBINSON TOWNSHIP, Washington, PA

Built 1968 Load: 99.8 t ADT: 924

SR 4007

Fair

Over: BRANCH OF RACCOON CREEK

SMITH TOWNSHIP, Washington, PA

Built 1970 Load: 99.8 t ADT: 3,144

SR 4020

Fair

Over: CHARTIERS CREEK

CANTON & S STRABANE TWP., Washington, PA

Built 1955 Load: 99.8 t ADT: 7,168

SR 4041

Fair

Over: Westland Mine Entry

MOUNT PLEASANT TOWNSHIP, Washington, PA

Built 1932 Load: 99.8 t ADT: 261

SR 8005

Fair

Over: BR. LITTLE TENMILE CREEK

AMWELL TOWNSHIP, Washington, PA

Built 1965 Load: 99.8 t ADT: 1,515

Waynesburg Road

Good

Over: MIDDLE WHEELING CREEK

40 North of Twp Rd 360, Washington, PA

Built 2006 Load: 17.2 t ADT: 50

SR 0088

Good

Over: MINGO CREEK

CARROLL & UNION TOWNSHIP, Washington, PA

Built 1985 Load: 28.1 t ADT: 2,269

SR 4013

Good

Over: ROBB RUN

MCDONALD BOROUGH, Washington, PA

Built 1993 Load: 29.0 t ADT: 2,722

T-781 Morgan Rd

Good

Over: PA-TPK (576)

Just east of I-79, Washington, PA

Built 2019 Load: 29.8 t ADT: 192

SR 4037

Good

Over: BRANCH OF ROBINSON RUN

ROBINSON TOWNSHIP, Washington, PA

Built 1973 Load: 29.9 t ADT: 3,259

SR 0079

Good

Over: SR 2006

AMWELL TWP, Washington, PA

Built 2001 Load: 29.9 t ADT: 12,106

MAIN STREET

Good

Over: RACCOON CREEK

300 N OF SR18 INTERSECT, Washington, PA

Built 2001 Load: 30.8 t ADT: 800

PA TPK 0576

Good

Over: S.R. 0022

Robinson Township, Washington, PA

Built 2013 Load: 31.4 t ADT: 10,538

PA TPK 0576

Good

Over: SR 0022

Robinson Township, Washington, PA

Built 2013 Load: 31.4 t ADT: 10,538

SR 0079

Good

Over: SR 2006

AMWELL TWP, Washington, PA

Built 2001 Load: 31.8 t ADT: 12,072

DEEMS BRIDGE T-948

Good

Over: PIKE RUN

150 FROM SR 2071, Washington, PA

Built 1903 Load: 32.4 t ADT: 300

SR 1014

Good

Over: SR 0070

SOUTH STRABANE TWP, Washington, PA

Built 2006 Load: 32.4 t ADT: 702

SR 4049

Good

Over: SR 0070

1.3 MI SOUTH OF SR 4020, Washington, PA

Built 2006 Load: 32.4 t ADT: 4,058

SR 0917

Good

Over: SR 0070

4.8 mi N from SR 0136, Washington, PA

Built 2016 Load: 32.4 t ADT: 1,580

PA TPK 0576

Good

Over: Little Raccoon Run

0.3 mi south of Candor Rd, Washington, PA

Built 2016 Load: 32.4 t ADT: 9,999

TOWNSHIP ROAD 505

Good

Over: SR 0070

NORTH FRANKLIN TOWNSHIP, Washington, PA

Built 1960 Load: 32.7 t ADT: 590

SR 0070

Good

Over: BR N BR PIGEON CK

SOMERSET TOWNSHIP, Washington, PA

Built 1956 Load: 32.7 t ADT: 27,992

PA TPK (TOLL 43)

Good

Over: SR 1020

.8MI. N. OF DONORA INT., Washington, PA

Built 1999 Load: 32.7 t ADT: 5,633

PA TPK (TOLL 43)

Good

Over: SR0481 TAYLORS RUN

1MI. N. OF DONORA INT., Washington, PA

Built 1999 Load: 32.7 t ADT: 5,633

GRANGE ROAD

Good

Over: TRIB. TO PIGEON CREEK

BENTLEYVILLE RD INTERSECT, Washington, PA

Built 2016 Load: 32.7 t ADT: 1,000

SR 2011

Good

Over: Plum Run

just S of SR 2024, Washington, PA

Built 2009 Load: 33.4 t ADT: 1,126

BRIDGE PC29

Good

Over: PIGEON CREEK trib

200 SOUTHWEST OF SR 2019, Washington, PA

Built 1942 Load: 33.7 t ADT: 150

Strope Rd (SR4023)

Good

Over: NORTH FORK CROSS CREEK

CROSS CREEK TOWNSHIP, Washington, PA

Built 2017 Load: 33.7 t ADT: 309

SR 4022

Good

Over: Branch of Buffalo Creek

BUFFALO TOWNSHIP, Washington, PA

Built 2021 Load: 33.7 t ADT: 220

SR 1035

Good

Over: SR 0079

NORTH STRABANE TOWNSHIP, Washington, PA

Built 1965 Load: 34.0 t ADT: 2,898

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.