County profile · official public datasets

Cayuga County, NY

148 public highway bridges tracked in the FHWA National Bridge Inventory: 36.5% rated Good, 46.6% Fair, 16.9% Poor.

148
Public bridges
36.5%
Good condition
16.9%
Poor condition

The verdict

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

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

58th
of 62 on Poor share
16.9%
Poor-condition share
148
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.

Cayuga County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cayuga County ranks #58 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 16.9%). Cayuga County, New York contains 148 public highway bridges. Roughly 36.5% are rated “Good,” 46.6% “Fair,” and 16.9% “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

148

Public highway bridges in Cayuga County

Good condition

36.5%

54 of 148 rated 7-9

Fair condition

46.6%

69 of 148 rated 5-6

Poor condition

16.9%

25 of 148 rated 4 or below

In-state Poor-share rank

#58 of 62

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

Condition distribution

Share of 148 NBI-tracked bridges by lowest applicable component rating.

Good
36.5% (54)
Fair
46.6% (69)
Poor
16.9% (25)

Cayuga County's Poor-condition bridges carry 46,709 vehicle crossings a day

That is 10.9% of the county's reported daily bridge traffic on 17% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,868 crossings a day against 3,489 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 147 of 148 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

50.7% of Cayuga County's bridges have passed the 50-year mark

75 of the 148 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 36.5% 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 65.3% of the county's Poor-condition bridge traffic

RTE I90 over CRANE BROOK, built 1953, carries 30,507 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 25-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 46,709 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Cayuga County's bridges were built

148 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1950s, when 26 of the county's bridges still in the inventory were built, which is 17.6% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1971) matches the New York average (1972).

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

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

The 5 New York counties nearest Cayuga County in number of bridges, with their condition splits. Its 16.9% Poor share is the 6th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1970 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 Cayuga County and the 5 New York counties closest to it in inventory size
County Bridges Poor
Richmond County 164 1.8%
Genesee County 162 13.6%
Cayuga County (this page) 148 16.9%
Warren County 141 9.9%
Orleans County 136 16.2%
Wyoming County 136 8.8%

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 Cayuga 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 Cayuga County, both outside New York so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NY (148 bridges here).

Similar average build year

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

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

All 148 Good 54 Fair 69 Poor 25

Fair-condition bridges (69)

COUNTY ROAD 10B

Fair

Over: OWASCO LAKE OUTLET

4 MILES NE OF AUBURN, Cayuga, NY

Built 1900 Load: 40.8 t ADT: 2,445

RTE 38

Fair

Over: OWASCO OUTLET

1.9 MI N JCT RTS 38 + 31, Cayuga, NY

Built 1959 Load: 41.7 t ADT: 2,481

INDIAN FIELD ROAD

Fair

Over: LITTLE SALMON CREEK

2.2 MI SW GENOA, Cayuga, NY

Built 1991 Load: 41.7 t ADT: 245

POPLAR RIDGE ROAD

Fair

Over: BIG SALMON CREEK

.5 MI W OF VENICE CENTER, Cayuga, NY

Built 1974 Load: 41.7 t ADT: 521

OAKLAND RD

Fair

Over: 90IX RTE I90

1.1 MI W 90I EXIT 40 RAMP, Cayuga, NY

Built 1988 Load: 42.6 t ADT: 395

N MAIN ST

Fair

Over: 90IX RTE I90

3.1 MI W 90I EXIT 40 RAMP, Cayuga, NY

Built 1953 Load: 42.6 t ADT: 588

MILLER STREET

Fair

Over: OWASCO POWER RACE

0.5 M S OF JUNC US20&US5, Cayuga, NY

Built 1978 Load: 43.7 t ADT: 44

TOWN LINE RD

Fair

Over: 90IX RTE I90

1.6 MI W I90 EXIT 40 RAMP, Cayuga, NY

Built 1953 Load: 46.0 t ADT: 57

RTE 38

Fair

Over: 90IX RTE I90

JCT SH 38 & I90, Cayuga, NY

Built 1990 Load: 48.1 t ADT: 2,481

DRESSERVILLE ROAD

Fair

Over: DRESSERVILLE CRK

4 mi. SW of S. End of Ska, Cayuga, NY

Built 1965 Load: 48.1 t ADT: 179

RTE 5

Fair

Over: OWASCO OUTLET

JCT RTE 5 + OWASCO OUTLET, Cayuga, NY

Built 1976 Load: 49.0 t ADT: 9,011

SHEPHERD ROAD

Fair

Over: PUTNAM BROOK

1 MILE EAST OF WEEDSPORT, Cayuga, NY

Built 1964 Load: 50.8 t ADT: 431

RTE 90

Fair

Over: YAWGER CREEK

2.7 MI SE VILLAGE CAYUGA, Cayuga, NY

Built 1941 Load: 52.6 t ADT: 2,116

RTE 5

Fair

Over: OWASCO OUTLET

JCT RTE 5 + OWASCO OUTLET, Cayuga, NY

Built 1976 Load: 52.6 t ADT: 9,562

RTE 104

Fair

Over: STERLING CREEK

1.6 MI NE JCT RTS 104 &38, Cayuga, NY

Built 1999 Load: 53.5 t ADT: 3,374

RTE 38

Fair

Over: MILL CREEK

0.1 MI S JCT RTS 38 & 39A, Cayuga, NY

Built 1995 Load: 56.2 t ADT: 7,572

RTE 31

Fair

Over: OWASCO OUTLET

0.2 MI NW JCT RTS 31 & 38, Cayuga, NY

Built 1995 Load: 61.7 t ADT: 5,012

COUNTY ROAD 4B

Fair

Over: YAWGER CREEK

1 MI NE OF UNION SPRINGS, Cayuga, NY

Built 1982 Load: 65.3 t ADT: 119

RTE I90

Fair

Over: CR 14

2.7MI E INTCGE 40 ON I90, Cayuga, NY

Built 1953 Load: 65.3 t ADT: 32,077

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.