County profile · official public datasets

Warren County, NY

141 public highway bridges tracked in the FHWA National Bridge Inventory: 39% rated Good, 51.1% Fair, 9.9% Poor.

141
Public bridges: 39%
Good condition: 9.9%
Poor condition

The verdict

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

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

34th
of 62 on Poor share: 9.9%
Poor-condition share: 141
public highway bridges: 1970
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.

Warren County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Warren County ranks #34 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.9%). Warren County, New York contains 141 public highway bridges. Roughly 39% are rated “Good,” 51.1% “Fair,” and 9.9% “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

141

Public highway bridges in Warren County

Good condition

39%

55 of 141 rated 7-9

Fair condition

51.1%

72 of 141 rated 5-6

Poor condition

9.9%

14 of 141 rated 4 or below

In-state Poor-share rank

#34 of 62

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

Condition distribution

Share of 141 NBI-tracked bridges by lowest applicable component rating.

Good

39% (55)

Fair

51.1% (72)

Poor

9.9% (14)

Warren County's Poor-condition bridges carry 51,620 vehicle crossings a day

That is 10% of the county's reported daily bridge traffic on 9.6% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 3,971 crossings a day against 2,754 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 136 of 141 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

63.8% of Warren County's bridges have passed the 50-year mark

90 of the 141 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 39% 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 24% of the county's Poor-condition bridge traffic

RTE 9 over SCHROON RIVER, built 1931, carries 12,388 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 51,620 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

2
1900s

4
1910s

3
1920s

3
1930s

18
1940s

10
1950s

5
1960s

42
1970s

3
1980s

3
1990s

6
2000s

12
2010s

18
2020s

12

What this shows Construction peaked in the 1960s, when 42 of the county's bridges still in the inventory were built, which is 29.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1970) matches the New York average (1972).

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

The 5 New York counties nearest Warren County in number of bridges, with their condition splits. Its 9.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1970 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 Warren County and the 5 New York counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Richmond County	164	30.5%	67.7%	1.8%	1970
Genesee County	162	28.4%	58%	13.6%	1970
Cayuga County	148	36.5%	46.6%	16.9%	1971
Warren County (this page)	141	39%	51.1%	9.9%	1970
Orleans County	136	41.2%	42.6%	16.2%	1962
Wyoming County	136	38.2%	52.9%	8.8%	1977

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

Similar inventory size

Nearest county inventories outside NY (141 bridges here).

Petersburg County, AK · 141 bridges
St. Johns County, FL · 141 bridges
Renville County, MN · 141 bridges
Geauga County, OH · 141 bridges

Similar average build year

Nearest mean year-built outside NY (1970 here).

Hamilton County, OH · avg 1970 · 783 bridges
Yavapai County, AZ · avg 1970 · 543 bridges
Garfield County, OK · avg 1970 · 504 bridges
San Luis Obispo County, CA · avg 1970 · 401 bridges

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

All 141 Good 55 Fair 72 Poor 14

Fair-condition bridges (72)

Sort:

Warren County Bridge Snapshot

Condition distribution

Warren County's Poor-condition bridges carry 51,620 vehicle crossings a day

63.8% of Warren County's bridges have passed the 50-year mark

One structure carries 24% of the county's Poor-condition bridge traffic

How Warren 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

Fair-condition bridges (72)

TR635

COUNTY ROAD 14

WARREN STREET

CR 22

TR6 DENECKER ROAD

RTE 8

RTE I87

RTE I87

RTE 912Q

RTE 912Q

RTE 28 REST AREA

RTE 28

RTE I87

RTE I87

CR4 ATHOL ROAD

ADIRONDACK ROAD

RTE I87

MURRAY STREET

RTE 9L

NATURAL STONE BR R

PEACEFUL VALLEY RO

RTE 9N

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