Total bridges
104
Public highway bridges in Putnam County
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.
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
- 1900s 4
1900–1909
4 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 8
1920–1929
8 bridges
- 1930s 15
1930–1939
15 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 6
1950–1959
6 bridges
- 1960s
1960–1969
38 bridges
- 1970s 4
1970–1979
4 bridges
- 1980s 5
1980–1989
5 bridges
- 1990s 8
1990–1999
8 bridges
- 2000s 5
2000–2009
5 bridges
- 2010s 4
2010–2019
4 bridges
- 2020s 4
2020–2029
4 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.
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.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Schenectady County | 115 | 32.2% | 60% | 7.8% | 1977 |
| Putnam County (this page) | 104 | 15.4% | 73.1% | 11.5% | 1964 |
| Schuyler County | 100 | 40% | 55% | 5% | 1983 |
| Fulton County | 98 | 34.7% | 50% | 15.3% | 1958 |
| Wayne County | 97 | 48.5% | 41.2% | 10.3% | 1974 |
| Hamilton County | 88 | 34.1% | 51.1% | 14.8% | 1970 |
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).
- Nassau County, FL · 104 bridges
- Brooks County, GA · 104 bridges
- Grady County, GA · 104 bridges
- Bonner County, ID · 104 bridges
Similar average build year
Nearest mean year-built outside NY (1964 here).
- Bergen County, NJ · avg 1964 · 577 bridges
- Morris County, NJ · avg 1964 · 508 bridges
- Baltimore city County, MD · avg 1964 · 374 bridges
- Ross County, OH · avg 1964 · 356 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (16)
RTE 6
GoodOver: BIKE PATH
1.4 MI E JCT US 6 & SH 52, Putnam, NY
Built 2009 Load: 40.8 t ADT: 15,679
RTE 22
GoodOver: CROTON RIVER
0.4 MI N JCT RTS 22+164, Putnam, NY
Built 1932 Load: 40.8 t ADT: 14,879
RTE 6
GoodOver: MNRR HA LINE
0.9 MI W JCT RTS 6+22+202, Putnam, NY
Built 2021 Load: 44.5 t ADT: 8,657
SODOM ROAD
GoodOver: E BR CROTON RIVER
1.3 Mi EAST OF BREWSTER, Putnam, NY
Built 2021 Load: 46.3 t ADT: 2,193
PROSPECT HILL RD
GoodOver: MNRR HA LINE TONETTA BR
1 MILE NORTH OF BREWSTER, Putnam, NY
Built 2018 Load: 47.2 t ADT: 2,412
RTE 22
GoodOver: EAST BRANCH CROTON RIVER
.7 MI N JCT I684 & I84, Putnam, NY
Built 1994 Load: 49.0 t ADT: 11,941
RTE 9
GoodOver: CLOVE CREEK
3.6 MI N JCT US 9 & SH 30, Putnam, NY
Built 1940 Load: 49.9 t ADT: 16,532
TOWNERS ROAD
GoodOver: M.BR.CROTON RIVER
.9 MI E INT RTS 45 & 52, Putnam, NY
Built 1995 Load: 49.9 t ADT: 1,310
RTE 22
GoodOver: EAST BRANCH CROTON RIVER
.7 MI N JCT I684 & I84, Putnam, NY
Built 1994 Load: 53.5 t ADT: 11,941
RTE 414
GoodOver: 987G84021071 987G840210
JCT. PUDDING ST AND TSP, Putnam, NY
Built 2020 Load: 63.5 t ADT: 4,876
MILL ROAD
GoodOver: CLOVE CREEK
5.0 MI NE OF COLD SPRING, Putnam, NY
Built 2017 Load: 64.4 t ADT: 14
FAIR ST
GoodOver: MID BR CROTON RVR
1.4 MI E OF CARMEL, Putnam, NY
Built 2006 Load: 72.6 t ADT: 8,588
DREWVILLE ROAD
GoodOver: WEST BRANCH CROTON RIVER
2.2 MI E OF MAHOPAC, Putnam, NY
Built 2023 Load: 98.9 t ADT: 4,333
RTE I84
GoodOver: STUMP POND STREAM
2.3 MI NW EXIT 58 OF I84, Putnam, NY
Built 1968 Load: 99.9 t ADT: 42,744
RTE I84
GoodOver: STUMP POND STREAM
0.2 MI E JCT I84 INT 17, Putnam, NY
Built 1968 Load: 99.9 t ADT: 1,321
BOWEN ROAD
GoodOver: DREW LAKE OUTLET
2.6 MI N OF LAKE CARMEL, Putnam, NY
Built 1968 Load: 99.9 t ADT: 117
Read our methodology - how this data is sourced, computed, and verified.
Related
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.