County profile · official public datasets

Putnam County, NY

104 public highway bridges tracked in the FHWA National Bridge Inventory: 15.4% rated Good, 73.1% Fair, 11.5% Poor.

104
Public bridges
15.4%
Good condition
11.5%
Poor condition

The verdict

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

Putnam County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

44th
of 62 on Poor share
11.5%
Poor-condition share
104
public highway bridges
1964
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.

Putnam County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Putnam County ranks #44 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.5%). Putnam County, New York contains 104 public highway bridges. Roughly 15.4% are rated “Good,” 73.1% “Fair,” and 11.5% “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

104

Public highway bridges in Putnam County

Good condition

15.4%

16 of 104 rated 7-9

Fair condition

73.1%

76 of 104 rated 5-6

Poor condition

11.5%

12 of 104 rated 4 or below

In-state Poor-share rank

#44 of 62

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

Condition distribution

Share of 104 NBI-tracked bridges by lowest applicable component rating.

Good
15.4% (16)
Fair
73.1% (76)
Poor
11.5% (12)

Putnam County's Poor-condition bridges carry 106,905 vehicle crossings a day

That is 8.7% of the county's reported daily bridge traffic on 11.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 8,909 crossings a day against 9,221 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 103 of 104 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

73.1% of Putnam County's bridges have passed the 50-year mark

76 of the 104 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 15.4% 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 28.1% of the county's Poor-condition bridge traffic

RTE I84 over MNRR BE LINE, built 1968, carries 30,039 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 12-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 106,905 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Putnam County's bridges were built

104 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 38 of the county's bridges still in the inventory were built, which is 36.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1964, 8 years older than the New York average of 1972.

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

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

The 5 New York counties nearest Putnam County in number of bridges, with their condition splits. Its 11.5% Poor share is the 4th-lowest of these 6. Its average build year of 1964 against a peer-group mean of 1972 is 8 years older.

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

Bridge inventory size and condition shares for Putnam County and the 5 New York counties closest to it in inventory size
County Bridges Poor
Schenectady County 115 7.8%
Putnam County (this page) 104 11.5%
Schuyler County 100 5%
Fulton County 98 15.3%
Wayne County 97 10.3%
Hamilton County 88 14.8%

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

Similar inventory size

Nearest county inventories outside NY (104 bridges here).

Similar average build year

Nearest mean year-built outside NY (1964 here).

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

All 104 Good 16 Fair 76 Poor 12

Fair-condition bridges (76)

RTE 312

Fair

Over: 84I 84I84031068 RTE I84

I84 INT 19, Putnam, NY

Built 1968 Load: 48.6 t ADT: 18,150

RTE 311

Fair

Over: E BR CROTON RIVER

0.4 MI W JCT RTS 311+22, Putnam, NY

Built 1958 Load: 49.9 t ADT: 8,449

LAKE SHORE DRIVE

Fair

Over: LAKE CARMEL OUTLET

AT LAKE CARMEL, Putnam, NY

Built 1925 Load: 49.9 t ADT: 1,091

RTE I84

Fair

Over: BULLET HOLE ROAD

1.7 MI E I84 INT 61, Putnam, NY

Built 1968 Load: 50.8 t ADT: 21,527

RTE I84

Fair

Over: ARGONNE ROAD RIVERSIDE

JCT RTS I84+6+22, Putnam, NY

Built 1970 Load: 50.8 t ADT: 30,039

RTE 301

Fair

Over: WEST BRANCH CROTON RIVER

4.2 MI E JCT SH 301 & TSP, Putnam, NY

Built 1929 Load: 51.7 t ADT: 2,874

RTE I84

Fair

Over: BULLET HOLE ROAD

1.7 MI E I84 INT 61, Putnam, NY

Built 1968 Load: 51.7 t ADT: 22,655

TURK HILL ROAD

Fair

Over: 684I684I84021021 RTE I6

1.4 MI S JCT I84 & I684, Putnam, NY

Built 1967 Load: 51.7 t ADT: 1,224

RTE I84

Fair

Over: FAIR STREET

.6 MI SE I84 EXIT 18, Putnam, NY

Built 1968 Load: 53.5 t ADT: 22,655

TONETTA LAKE ROAD

Fair

Over: MNRR BEACON LINE

.9 MILE NORTH OF BREWSTER, Putnam, NY

Built 1986 Load: 53.5 t ADT: 2,633

RTE I84

Fair

Over: RTE 121

1.0 MI E JCT RTS I84+I684, Putnam, NY

Built 1967 Load: 54.4 t ADT: 35,938

RTE I84

Fair

Over: COUNTY ROAD 58

1.1 MI E I84 INT 65, Putnam, NY

Built 1968 Load: 54.4 t ADT: 30,039

RTE I84

Fair

Over: COUNTY ROAD 58

1.1 MI E I84 INT 65, Putnam, NY

Built 1968 Load: 54.4 t ADT: 23,829

DIXON ROAD

Fair

Over: W BR CROTON RIVER

3.2 MI SW OF LAKE CARMEL, Putnam, NY

Built 1929 Load: 54.4 t ADT: 1,330

UPPER STATION RD

Fair

Over: MNRR HUDSON LINE

0.6 MI NE JCT RTS 9D+403, Putnam, NY

Built 1990 Load: 54.4 t

Croton Falls Road

Fair

Over: W BRANCH CROTON RIVER

0.7 MI NW OF CROTON FALLS, Putnam, NY

Built 1908 Load: 54.4 t ADT: 7,593

CANOPUS HOLLOW RD

Fair

Over: CANOPUS CREEK

1.5 MI SW OF OSCAWANA LK, Putnam, NY

Built 1999 Load: 56.2 t ADT: 1,348

RTE I684

Fair

Over: 6 6 84041136 RTE 6 M

JCT I684 & US 6, Putnam, NY

Built 1967 Load: 57.2 t ADT: 29,466

RTE 9

Fair

Over: PHILIPSE BRIDGE ROAD

3.5 MI S JCT US 9 & SH301, Putnam, NY

Built 2000 Load: 58.1 t ADT: 12,047

RTE 311

Fair

Over: MIDDLE BR CROTON

0.3 MI W JCT RTS 311+I84, Putnam, NY

Built 1936 Load: 59.9 t ADT: 9,135

RTE I684

Fair

Over: 6 6 84041137 RTE 6

JCT I684 & US 6, Putnam, NY

Built 1967 Load: 59.9 t ADT: 34,150

STARR RIDGE ROAD

Fair

Over: 84I 84I84031101 RTE I84

0.3 MI E JCT RTS I84+I684, Putnam, NY

Built 1967 Load: 60.8 t ADT: 3,452

LUDINGTONVILLE ROA

Fair

Over: STUMP POND STREAM

2.1 MILES SW OF HOLMES, Putnam, NY

Built 1968 Load: 63.8 t ADT: 8,584

EAST MOUNTAIN ROAD

Fair

Over: OUTLET BEACON RESERVOIR

2.7 MI NE OF N HIGHLAND, Putnam, NY

Built 1935 Load: 75.3 t ADT: 102

HORTON ROAD

Fair

Over: CLOVE CREEK

.4 MI East of Rt. 9, Putnam, NY

Built 1925 Load: 79.8 t ADT: 21

RTE I84

Fair

Over: STUMP POND STREAM

0.2 MI E JCT I84 INT 17, Putnam, NY

Built 1968 Load: 99.9 t ADT: 21,372

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.