County profile · official public datasets

Tioga County, NY

220 public highway bridges tracked in the FHWA National Bridge Inventory: 38.6% rated Good, 52.3% Fair, 9.1% Poor.

220
Public bridges: 38.6%
Good condition: 9.1%
Poor condition

The verdict

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

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

Top 47%
lowest Poor share in state: 9.1%
Poor-condition share: 220
public highway bridges: 1976
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 #29 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.1%). Tioga County, New York contains 220 public highway bridges. Roughly 38.6% are rated “Good,” 52.3% “Fair,” and 9.1% “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

220

Public highway bridges in Tioga County

Good condition

38.6%

85 of 220 rated 7-9

Fair condition

52.3%

115 of 220 rated 5-6

Poor condition

9.1%

20 of 220 rated 4 or below

In-state Poor-share rank

#29 of 62

Among New York counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 220 NBI-tracked bridges by lowest applicable component rating.

Good

38.6% (85)

Fair

52.3% (115)

Poor

9.1% (20)

Tioga County's Poor-condition bridges carry 36,822 vehicle crossings a day

That is 5.3% of the county's reported daily bridge traffic on 9.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,841 crossings a day against 2,782 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 218 of 220 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

54.1% of Tioga County's bridges have passed the 50-year mark

119 of the 220 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 38.6% 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 23.3% of the county's Poor-condition bridge traffic

RTE 17 over ITHACA CENTRAL RR, built 1973, carries 8,583 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 20-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 36,822 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

1
1900s

1
1920s

1
1930s

25
1940s

11
1950s

10
1960s

40
1970s

41
1980s

23
1990s

12
2000s

18
2010s

32
2020s

5

What this shows Construction peaked in the 1970s, when 41 of the county's bridges still in the inventory were built, which is 18.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1976) matches the New York average (1972).

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

The 5 New York counties nearest Tioga County in number of bridges, with their condition splits. Its 9.1% Poor share is the 2nd-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1974 is in line with the group.

Showing the 5 closest of 61 New York counties eligible for comparison.

Bridge inventory size and condition shares for Tioga County and the 5 New York counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Oswego County	233	28.3%	61.4%	10.3%	1975
Saratoga County	228	46.9%	45.6%	7.5%	1974
Greene County	227	36.6%	53.7%	9.7%	1978
Tioga County (this page)	220	38.6%	52.3%	9.1%	1976
Montgomery County	205	34.6%	54.1%	11.2%	1965
Clinton County	201	39.3%	48.3%	12.4%	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 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 New York so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NY (220 bridges here).

Bibb County, GA · 220 bridges
Decatur County, IN · 220 bridges
Dubois County, IN · 220 bridges
Taylor County, IA · 220 bridges

Similar average build year

Nearest mean year-built outside NY (1976 here).

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Comanche County, OK · avg 1976 · 593 bridges
Prince George's County, MD · avg 1976 · 576 bridges

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

All 220 Good 85 Fair 115 Poor 20

All bridges (220)

Sort:

Tioga County Bridge Snapshot

Condition distribution

Tioga County's Poor-condition bridges carry 36,822 vehicle crossings a day

54.1% of Tioga County's bridges have passed the 50-year mark

One structure carries 23.3% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (220)

RTE 17

RTE 34

RTE 34

RTE 17

ITHACA STREET

RTE 17

LOWER FAIRFIELD RO

RTE 17

RTE 38

RTE 960J

TALCOTT STREET

PENNSYLVANIA AVE

RTE 282

CLINTON AVENUE

MOORE HILL ROAD

RTE 17C

RTE 960J

County Road 33

RTE 17

RTE 220

RENIFF ROAD

PROSPECT VALLEY RO

EAST RIVER ROAD

RTE 96

RTE 17

RTE 17

RTE 38

BROAD STREET EXTEN

RTE 38

RTE 79

RTE 960J

RTE 17

RTE 38

RTE 17

RTE 17

HALSEY VALLEY ROAD

RTE 17

HANDS HILL ROAD

COUNTY ROAD 9

RTE 96

RTE 17

RTE 17

RTE 17

RTE 96B

HALSEY VALLEY RD.

GLEN ROAD

RTE 96

RTE 17

STRAITS CORNERS RD

RTE 17

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