County profile · official public datasets

Tioga County, PA

429 public highway bridges tracked in the FHWA National Bridge Inventory: 49.4% rated Good, 47.3% Fair, 3.3% Poor.

429
Public bridges
49.4%
Good condition
3.3%
Poor condition

The verdict

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

Tioga County pairs a top-5% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 3%
lowest Poor share in state
3.3%
Poor-condition share
429
public highway bridges
1977
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.

Tioga County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Tioga County ranks #2 of 67 Pennsylvania counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.3%). Tioga County, Pennsylvania contains 429 public highway bridges. Roughly 49.4% are rated “Good,” 47.3% “Fair,” and 3.3% “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

429

Public highway bridges in Tioga County

Good condition

49.4%

212 of 429 rated 7-9

Fair condition

47.3%

203 of 429 rated 5-6

Poor condition

3.3%

14 of 429 rated 4 or below

In-state Poor-share rank

#2 of 67

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

Condition distribution

Share of 429 NBI-tracked bridges by lowest applicable component rating.

Good
49.4% (212)
Fair
47.3% (203)
Poor
3.3% (14)

Tioga County's Poor-condition bridges carry 9,804 vehicle crossings a day

That is 1.6% of the county's reported daily bridge traffic on 3.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 700 crossings a day against 1,762 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 428 of 429 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

45.2% of Tioga County's bridges have passed the 50-year mark

194 of the 429 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 49.4% 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 43.7% of the county's Poor-condition bridge traffic

SR 4002 over CHARLESTON RUN, built 1935, carries 4,289 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 14-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 9,804 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Tioga County's bridges were built

429 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 61 of the county's bridges still in the inventory were built, which is 14.2% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1977, 7 years newer than the Pennsylvania average of 1970.

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

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

The 5 Pennsylvania counties nearest Tioga County in number of bridges, with their condition splits. Its 3.3% Poor share is the 1st-lowest of these 6. Its average build year of 1977 against a peer-group mean of 1971 is 6 years newer.

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

Bridge inventory size and condition shares for Tioga County and the 5 Pennsylvania counties closest to it in inventory size
County Bridges Poor
Dauphin County 449 8.5%
Erie County 442 9.5%
Mercer County 438 15.5%
Tioga County (this page) 429 3.3%
Fayette County 422 17.8%
Bedford County 417 9.1%

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

Similar inventory size

Nearest county inventories outside PA (429 bridges here).

Similar average build year

Nearest mean year-built outside PA (1977 here).

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

All 429 Good 212 Fair 203 Poor 14

All bridges (429)

SR 2005

Good

Over: CANOE CAMP CREEK

.7 MI.S.OF MANSFIELD BORO, Tioga, PA

Built 1985 Load: 66.2 t ADT: 8,132

SR 1001

Good

Over: OVER LAMBS CREEK

5 MI NW OF MANSFIELD, Tioga, PA

Built 1993 Load: 68.0 t ADT: 348

SR 3001

Good

Over: FAHNESTOCK RUN

1.75 MI.S.OF LEETONIA, Tioga, PA

Built 1996 Load: 68.0 t ADT: 15

US 6

Good

Over: LONG RUN

0.6 MI EAST OF GAINES, Tioga, PA

Built 1959 Load: 69.9 t ADT: 3,465

T-754 RICHMOND TWP

Good

Over: SLATE CREEK

0.4 MI W OF CANOE CAMP, Tioga, PA

Built 2003 Load: 69.9 t ADT: 50

SR 49

Good

Over: OVER COWANESQUE RIVER

1 MI EAST OF POTTER BROOK, Tioga, PA

Built 2002 Load: 73.5 t ADT: 1,802

SR 15 NB

Good

Over: OVER JOHNSON CK & SR2016

.05M.SOUTH OF BLOSSBURG, Tioga, PA

Built 2000 Load: 76.2 t ADT: 4,491

SR 287

Good

Over: OVER WILSON CREEK

6 MI NORTH OF MORRIS, Tioga, PA

Built 1983 Load: 77.1 t ADT: 2,444

SR 0015-15 SB

Good

Over: OVER JOHNSON CK & SR2016

.05M.SOUTH OF BLOSSBURG, Tioga, PA

Built 2000 Load: 77.1 t ADT: 4,449

SR 6

Good

Over: OVER KELSEY CREEK

BORO OF WELLSBORO, Tioga, PA

Built 1938 Load: 78.9 t ADT: 9,918

SR 249

Good

Over: OVER BR. CROOKED CREEK

VILLAGE OF KEENEYVILLE, Tioga, PA

Built 1984 Load: 83.5 t ADT: 2,710

T-345

Good

Over: WILSON CREEK

3 MI. NORTH OF MORRIS, Tioga, PA

Built 1973 Load: 88.0 t ADT: 40

SR 1001

Good

Over: OVER LAMBS CREEK

4 MI N OF MANSFIELD, Tioga, PA

Built 1993 Load: 99.8 t ADT: 348

S.R. 328

Good

Over: ALDER RUN

2 MI. W. OF MILLERTON, Tioga, PA

Built 2002 Load: 99.8 t ADT: 1,624

SR 49

Good

Over: TR TO COWANESQUE RIVER

1.5 MI EAST OF ELKLAND, Tioga, PA

Built 2005 Load: 99.8 t ADT: 4,020

T-797

Poor

Over: SALT SPRING RUN

2 MI SE OF EASTPOINT, Tioga, PA

Built 1935 Load: 0.0 t ADT: 5

T-642

Poor

Over: ZIMMERMAN CREEK

0.5 MILE NE OF NAUVOO, Tioga, PA

Built 1909 Load: 7.3 t ADT: 50

T-385

Poor

Over: STONY FORK CREEK

VILLAGE OF STONY FORK, Tioga, PA

Built 1935 Load: 8.2 t ADT: 105

T-894 RUTLAND TWP.

Poor

Over: BAILEY CREEK

2.7 MI W OF ROSEVILLE, Tioga, PA

Built 1935 Load: 10.9 t ADT: 15

T-533

Poor

Over: TRIB TO MARSH CREEK

1.0 MI. N. OF STOKESDALE, Tioga, PA

Built 1919 Load: 11.8 t ADT: 55

T-337

Poor

Over: TRIB TO LONG RUN

2.7 MI SW OF SABINSVILLE, Tioga, PA

Built 1914 Load: 17.2 t ADT: 20

WESTFIELD TWP T374

Poor

Over: JEMISON CREEK

1.7 MI S OF PHILLIPS, Tioga, PA

Built 1975 Load: 18.1 t ADT: 150

SR 2017

Poor

Over: OVER TIOGA RIVER

BORO OF BLOSSBURG, Tioga, PA

Built 1933 Load: 20.0 t ADT: 3,872

T-526

Poor

Over: WILSON CREEK

4.6 MI SOUTH OF WELLSBORO, Tioga, PA

Built 1930 Load: 21.8 t ADT: 100

T-906 JACKSON TWP

Poor

Over: SEELY CREEK

.5 MI N.OF JOBS CORNERS, Tioga, PA

Built 1994 Load: 21.8 t ADT: 10

S.R.4027

Poor

Over: OVER CUMMINGS CREEK

1.5 MILES SOUTH OF NELSON, Tioga, PA

Built 1952 Load: 32.7 t ADT: 675

SR 4002

Poor

Over: CHARLESTON RUN

BORO OF WELLSBORO, Tioga, PA

Built 1935 Load: 40.8 t ADT: 4,289

SR 4012

Poor

Over: OVER MILL CREEK

0.5 MI SE OF SABINSVILLE, Tioga, PA

Built 1921 Load: 40.8 t ADT: 358

T-478

Poor

Over: MARSH CREEK

2.3 MI. W OF STOKESDALE, Tioga, PA

Built 1935 Load: 42.6 t ADT: 100

Read our methodology - how this data is sourced, computed, and verified.

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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.