Total bridges
248
Public highway bridges in Rockland County
County profile · official public datasets
Rockland County, NY
248 public highway bridges tracked in the FHWA National Bridge Inventory: 26.6% rated Good, 63.3% Fair, 10.1% Poor.
- 248
- Public bridges
- 26.6%
- Good condition
- 10.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Rockland County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 36th
- of 62 on Poor share
- 10.1%
- Poor-condition share
- 248
- 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.
Rockland County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Rockland County ranks #36 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.1%). Rockland County, New York contains 248 public highway bridges. Roughly 26.6% are rated “Good,” 63.3% “Fair,” and 10.1% “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
26.6%
66 of 248 rated 7-9
Fair condition
63.3%
157 of 248 rated 5-6
Poor condition
10.1%
25 of 248 rated 4 or below
In-state Poor-share rank
#36 of 62
Among New York counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 248 NBI-tracked bridges by lowest applicable component rating.
Good 26.6% (66)
Fair 63.3% (157)
Poor 10.1% (25)
Rockland County's Poor-condition bridges carry 829,600 vehicle crossings a day
That is 18.7% of the county's reported daily bridge traffic on 10% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 34,567 crossings a day against 15,842 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 241 of 248 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
64.5% of Rockland County's bridges have passed the 50-year mark
160 of the 248 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 26.6% 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 13.3% of the county's Poor-condition bridge traffic
RTE I87 over RTE 59 NJ TRANSIT RR, built 1954, carries 110,239 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 829,600 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Rockland County's bridges were built
248 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 7
1920–1929
7 bridges
- 1930s 15
1930–1939
15 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s
1950–1959
92 bridges
- 1960s 36
1960–1969
36 bridges
- 1970s 10
1970–1979
10 bridges
- 1980s 10
1980–1989
10 bridges
- 1990s 29
1990–1999
29 bridges
- 2000s 14
2000–2009
14 bridges
- 2010s 25
2010–2019
25 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1950s, when 92 of the county's bridges still in the inventory were built, which is 37.1% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1970) matches the New York average (1972).
How Rockland County compares with New York's closest counties by inventory size
The 5 New York counties nearest Rockland County in number of bridges, with their condition splits. Its 10.1% Poor share is the 3rd-lowest of these 6. Its average build year of 1970 against a peer-group mean of 1962 is 8 years newer.
Showing the 5 closest of 61 New York counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Chemung County | 256 | 38.7% | 54.7% | 6.6% | 1977 |
| Herkimer County | 248 | 46.8% | 41.1% | 12.1% | 1973 |
| Rockland County (this page) | 248 | 26.6% | 63.3% | 10.1% | 1970 |
| New York County | 247 | 13.4% | 76.9% | 9.7% | 1945 |
| Columbia County | 243 | 17.7% | 64.2% | 18.1% | 1963 |
| Kings County | 242 | 24.8% | 64% | 11.2% | 1953 |
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 Rockland 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 Rockland County, both outside New York so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NY (248 bridges here).
- Crawford County, AR · 248 bridges
- Cherokee County, IA · 248 bridges
- Poweshiek County, IA · 248 bridges
- Lowndes County, MS · 248 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.
Fair-condition bridges (157)
RTE 9W
FairOver: MINISCEONGO CREEK
1.6 MI S JCT RTS 9W+210, Rockland, NY
Built 1955 Load: 79.8 t ADT: 13,052
RTE 987C
FairOver: CSX TRANSPRTATION
0.2 MI N JCT PIP+RTE 303, Rockland, NY
Built 2001 Load: 81.6 t ADT: 45,187
COUNTY ROAD 23
FairOver: DE FOREST LAKE
1.3 MI SE JCT NY304+US9W, Rockland, NY
Built 1954 Load: 97.2 t ADT: 2,035
RTE 987C
FairOver: LOWER SPARKILL CREEK
.2 MI NW JCT PIP & SH 340, Rockland, NY
Built 1954 Load: 99.9 t ADT: 42,928
RTE 59
FairOver: N BR PASCACK BRK
1000FT NW OF JCT 59 & 87I, Rockland, NY
Built 1997 Load: 99.9 t ADT: 19,772
CONGERS ROAD
FairOver: LAKE DE FOREST
1.4 MI SE JCT NY304+US9W, Rockland, NY
Built 1954 Load: 99.9 t ADT: 10,634
FOREST BROOK ROAD
FairOver: PASCACK BROOK
1 MI NE JCT SH 59 & CR 45, Rockland, NY
Built 1993 Load: 99.9 t ADT: 1,954
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.