County profile · official public datasets

Oswego County, NY

233 public highway bridges tracked in the FHWA National Bridge Inventory: 28.3% rated Good, 61.4% Fair, 10.3% Poor.

233
Public bridges
28.3%
Good condition
10.3%
Poor condition

The verdict

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

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

37th
of 62 on Poor share
10.3%
Poor-condition share
233
public highway bridges
1975
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.

Oswego County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Oswego County ranks #37 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.3%). Oswego County, New York contains 233 public highway bridges. Roughly 28.3% are rated “Good,” 61.4% “Fair,” and 10.3% “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

233

Public highway bridges in Oswego County

Good condition

28.3%

66 of 233 rated 7-9

Fair condition

61.4%

143 of 233 rated 5-6

Poor condition

10.3%

24 of 233 rated 4 or below

In-state Poor-share rank

#37 of 62

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

Condition distribution

Share of 233 NBI-tracked bridges by lowest applicable component rating.

Good
28.3% (66)
Fair
61.4% (143)
Poor
10.3% (24)

Oswego County's Poor-condition bridges carry 37,655 vehicle crossings a day

That is 5.2% of the county's reported daily bridge traffic on 10.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,569 crossings a day against 2,207 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 233 of 233 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

49.8% of Oswego County's bridges have passed the 50-year mark

116 of the 233 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 28.3% 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 21.7% of the county's Poor-condition bridge traffic

RTE I81 over HALSEY ROAD, built 1961, carries 8,174 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 24-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 37,655 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Oswego County's bridges were built

233 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 45 of the county's bridges still in the inventory were built, which is 19.3% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1975) matches the New York average (1972).

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

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

The 5 New York counties nearest Oswego County in number of bridges, with their condition splits. Its 10.3% Poor share is the 4th-lowest of these 6. Its average build year of 1975 against a peer-group mean of 1969 is 6 years newer.

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

Bridge inventory size and condition shares for Oswego County and the 5 New York counties closest to it in inventory size
County Bridges Poor
Columbia County 243 18.1%
Kings County 242 11.2%
Oswego County (this page) 233 10.3%
Saratoga County 228 7.5%
Greene County 227 9.7%
Tioga County 220 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 Oswego 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 Oswego County, both outside New York so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NY (233 bridges here).

Similar average build year

Nearest mean year-built outside NY (1975 here).

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

All 233 Good 66 Fair 143 Poor 24

All bridges (233)

CR11

Good

Over: S BR LIL SALMON R

3.7 MI SE OF PARISH, Oswego, NY

Built 2014 Load: 73.5 t ADT: 653

CRIM ROAD

Good

Over: N B LIT SALMON RV

4.2 MILES EAST OF PARISH, Oswego, NY

Built 2014 Load: 75.3 t ADT: 114

SUTTON ROAD

Good

Over: FISH CREEK

1.6 MI SE OF PENNELLVILLE, Oswego, NY

Built 1987 Load: 76.2 t ADT: 875

COUNTY ROAD 12

Good

Over: CAUGHDENOY CREEK

2.5 MI SW OF CENTRAL SQUA, Oswego, NY

Built 2016 Load: 77.1 t ADT: 2,956

WEST STONE ROAD

Good

Over: CATFISH CREEK

4.2 MI W OF MEXICO, Oswego, NY

Built 1965 Load: 78.0 t ADT: 264

MILL STREET

Good

Over: NINEMILE CREEK

0.2 mi N Route 3, Oswego, NY

Built 1965 Load: 79.8 t ADT: 247

MILL ROAD

Good

Over: N BR LITTLE SALMON RIVER

IN THE VILLAGE OF PARISH, Oswego, NY

Built 1983 Load: 82.3 t ADT: 114

PENDERGAST ROAD

Good

Over: HINMANSVILLE CREEK

3.0 MI NW OF PHOENIX, Oswego, NY

Built 2012 Load: 85.3 t ADT: 923

JACKSONVILLE ROAD

Good

Over: OX CREEK

5.3 MI SW OF FULTON, Oswego, NY

Built 2012 Load: 99.9 t ADT: 305

MAPLE AVENUE

Poor

Over: LITTL SANDY CREEK

IN LACONA, Oswego, NY

Built 1940 Load: 5.8 t ADT: 159

SOPER MILLS RD

Poor

Over: CATFISH CREEK

4.8 MILES NW OF MEXICO, Oswego, NY

Built 1930 Load: 7.3 t ADT: 143

NELLIS DRIVE

Poor

Over: S BR LITTLE SALMON RIVER

3.2 MI SE OF PARISH, Oswego, NY

Built 1987 Load: 13.1 t ADT: 4

CR85 CUNNINGHAM R

Poor

Over: EIGHTMILE CREEK

2.8 MI NE OF HANNIBAL, Oswego, NY

Built 1938 Load: 13.1 t ADT: 569

RTE 69

Poor

Over: LITT SALMON RIVER

.3 MI W JCT SH 69 & US 11, Oswego, NY

Built 1934 Load: 13.5 t ADT: 2,613

CR26 N CAMDEN RD

Poor

Over: N BR LIL SALMON R

2.8 MI NE OF PARISH, Oswego, NY

Built 1935 Load: 16.9 t ADT: 563

COLE ROAD

Poor

Over: SAGE CREEK

1.5 MI N OF NY104, Oswego, NY

Built 1900 Load: 19.1 t ADT: 88

RTE I81

Poor

Over: SPRING BROOK RESERVOIR

0.7 MI N JCT I-81 SB +13, Oswego, NY

Built 1961 Load: 19.6 t ADT: 7,949

GAYVILLE ROAD

Poor

Over: SCRIBA CREEK

0.5mi N of CONSTANTIA Ham, Oswego, NY

Built 1950 Load: 20.9 t ADT: 1,820

MUNGER HILL ROAD

Poor

Over: BLACK CREEK

0.1 MI W OF RTE 69, Oswego, NY

Built 1897 Load: 23.6 t ADT: 1,504

PHOENIX ROAD

Poor

Over: FISH CREEK

1.9 MI NE OF PHOENIX, Oswego, NY

Built 2005 Load: 23.7 t ADT: 2,023

POWERS AVENUE

Poor

Over: LITTLE SANDY CK

AT LACONA, Oswego, NY

Built 1940 Load: 26.2 t ADT: 254

RTE I81

Poor

Over: SPRING BROOK

0.7 MI N JCT I-81 NB +13, Oswego, NY

Built 1961 Load: 29.4 t ADT: 6,692

CR23A

Poor

Over: SCRIBA CREEK

4.3 MI NW OF CONSTANTIA, Oswego, NY

Built 1900 Load: 29.4 t ADT: 665

BRACKETT ROAD

Poor

Over: NINE MILE CREEK

2.8 MILES SE OF HANNIBAL, Oswego, NY

Built 1933 Load: 31.5 t ADT: 651

RTE I81

Poor

Over: HALSEY ROAD

1 MI S I81 SB & SH 13, Oswego, NY

Built 1961 Load: 32.7 t ADT: 8,174

SIXTY-SIX ROAD

Poor

Over: STERLING VALLEY C

3.0 MI SW OF HANNIBAL, Oswego, NY

Built 1940 Load: 32.7 t ADT: 236

COUNTY ROAD 22

Poor

Over: LITTLE SANDY CREEK

0.6 MI E OF SANDY CREEK, Oswego, NY

Built 1958 Load: 32.7 t ADT: 1,247

WATERBURY ROAD

Poor

Over: PRINCE BROOK

3.0 MI SE OF REDFIELD, Oswego, NY

Built 1930 Load: 33.6 t ADT: 83

CASTER DRIVE

Poor

Over: N BR SALMON RIVER

6.1 MI N.W. OF REDFIELD, Oswego, NY

Built 1985 Load: 36.3 t ADT: 53

NO.OSCEOLA ROAD

Poor

Over: MILL STREAM

.5 MI NE OF REDFIELD, Oswego, NY

Built 1940 Load: 41.7 t ADT: 146

SALISBURY ROAD

Poor

Over: GRINDSTONE CREEK

3.7 MI. SW. OF PULASKI, Oswego, NY

Built 1985 Load: 64.4 t ADT: 437

RICHLAND-ORWELL RO

Poor

Over: TROUT BROOK

4.5 MI NW OF ALTMAR, Oswego, NY

Built 1930 Load: 66.2 t ADT: 1,383

SOUTH GRANBY ROAD

Poor

Over: OX CREEK

4.8 MI S OF FULTON, Oswego, NY

Built 1997 Load: 99.9 t ADT: 199

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.