Total bridges
483
Public highway bridges in Windsor County
County profile · official public datasets
Windsor County, VT
483 public highway bridges tracked in the FHWA National Bridge Inventory: 47.6% rated Good, 48.2% Fair, 4.1% Poor.
- 483
- Public bridges
- 47.6%
- Good condition
- 4.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Windsor County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 13th
- of 14 on Poor share
- 4.1%
- Poor-condition share
- 483
- public highway bridges
- 1965
- 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.
Windsor County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Windsor County ranks #13 of 14 Vermont counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.1%). Windsor County, Vermont contains 483 public highway bridges. Roughly 47.6% are rated “Good,” 48.2% “Fair,” and 4.1% “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
47.6%
230 of 483 rated 7-9
Fair condition
48.2%
233 of 483 rated 5-6
Poor condition
4.1%
20 of 483 rated 4 or below
In-state Poor-share rank
#13 of 14
Among Vermont counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 483 NBI-tracked bridges by lowest applicable component rating.
Good 47.6% (230)
Fair 48.2% (233)
Poor 4.1% (20)
Windsor County's Poor-condition bridges carry 87,295 vehicle crossings a day
That is 4.6% of the county's reported daily bridge traffic on 4.1% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 4,365 crossings a day against 2,346 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 483 of 483 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
68.9% of Windsor County's bridges have passed the 50-year mark
333 of the 483 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 47.6% 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 23% of the county's Poor-condition bridge traffic
I-89 NB over CONNECTICUT RIVER NECRR, built 1966, carries 20,105 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 20-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 87,295 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Windsor County's bridges were built
483 bridges with a recorded construction year, grouped by decade
- pre-1900 8
Built before 1900
8 bridges
- 1900s 7
1900–1909
7 bridges
- 1910s 19
1910–1919
19 bridges
- 1920s 34
1920–1929
34 bridges
- 1930s
1930–1939
64 bridges
- 1940s 24
1940–1949
24 bridges
- 1950s 24
1950–1959
24 bridges
- 1960s
1960–1969
111 bridges
- 1970s
1970–1979
56 bridges
- 1980s 25
1980–1989
25 bridges
- 1990s 24
1990–1999
24 bridges
- 2000s 26
2000–2009
26 bridges
- 2010s
2010–2019
50 bridges
- 2020s 11
2020–2029
11 bridges
What this shows Construction peaked in the 1960s, when 111 of the county's bridges still in the inventory were built, which is 23% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1965) matches the Vermont average (1964).
How Windsor County compares with Vermont's closest counties by inventory size
The 5 Vermont counties nearest Windsor County in number of bridges, with their condition splits. Its 4.1% Poor share is the 5th-lowest of these 6. Its average build year of 1965 against a peer-group mean of 1963 is in line with the group.
Showing the 5 closest of 13 Vermont counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Windsor County (this page) | 483 | 47.6% | 48.2% | 4.1% | 1965 |
| Windham County | 337 | 52.2% | 42.7% | 5% | 1960 |
| Rutland County | 266 | 51.5% | 45.9% | 2.6% | 1967 |
| Washington County | 248 | 49.6% | 46.8% | 3.6% | 1961 |
| Caledonia County | 247 | 53% | 45.3% | 1.6% | 1965 |
| Bennington County | 215 | 57.2% | 41.9% | 0.9% | 1964 |
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 Windsor 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 Windsor County, both outside Vermont so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside VT (483 bridges here).
- Cattaraugus County, NY · 484 bridges
- Tuscaloosa County, AL · 482 bridges
- Lycoming County, PA · 482 bridges
- Lauderdale County, MS · 481 bridges
Similar average build year
Nearest mean year-built outside VT (1965 here).
- Bedford County, PA · avg 1965 · 417 bridges
- Crawford County, PA · avg 1965 · 399 bridges
- Harper County, KS · avg 1965 · 372 bridges
- Columbia County, PA · avg 1965 · 271 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (233)
VT 00106 ML
FairOver: BLACK RIVER
2.8 MI N JCT. VT.10, Windsor, VT
Built 1939 Load: 36.3 t ADT: 2,400
VT 00010 ML
FairOver: GREAT BROOK
1.7 MI E JCT VT 103, Windsor, VT
Built 1932 Load: 37.2 t ADT: 3,400
VT 00010 ML
FairOver: GREAT BROOK
3.2 MI E JCT VT 103, Windsor, VT
Built 1938 Load: 37.2 t ADT: 3,000
I 00089 ML
FairOver: I 89 OVER US 5
0.5 MI N I89-I91 INTERS., Windsor, VT
Built 1966 Load: 37.2 t ADT: 26,000
I 00089 ML
FairOver: I 89 OVER US 5
0.5 MI N I89-I91 INTERS., Windsor, VT
Built 1966 Load: 37.2 t ADT: 26,000
VT 00011 ML
FairOver: ANDOVER BRANCH
3.6 MI W JCT. VT.103 N, Windsor, VT
Built 1933 Load: 38.1 t ADT: 4,000
I 00091 ML
FairOver: I 91 OVER TH NO 5
3.0 MI S EXIT 9, Windsor, VT
Built 1965 Load: 38.1 t ADT: 16,200
I 00091 ML
FairOver: I 91 OVER TH NO 5
3.0 MI S EXIT 9, Windsor, VT
Built 1965 Load: 38.1 t ADT: 16,200
I 00091 ML
FairOver: I 91 OVER US 5
I 91 EXIT 7, Windsor, VT
Built 1965 Load: 39.9 t ADT: 13,000
I 00091 ML
FairOver: I 91 OVER US 5
I 91 EXIT 7, Windsor, VT
Built 1965 Load: 39.9 t ADT: 13,000
I 00091 ML
FairOver: I 91 OVER US 5
0.8 MI S EXIT 7, Windsor, VT
Built 1965 Load: 40.8 t ADT: 15,000
NH 10A WHEELOCK ST
FairOver: CONNECTICUT RIVER
0.1 MI FROM VERMONT SL, Windsor, VT
Built 1998 Load: 40.8 t ADT: 13,460
TR 0TH13
FairOver: TH NO 13 OVER I 89
4.8 MI S EXIT 3, Windsor, VT
Built 1968 Load: 40.8 t ADT: 100
C3056
FairOver: MID. BR WILLIAMS RIVER
0.07 MI TO JCT W VT11, Windsor, VT
Built 1974 Load: 41.7 t ADT: 10
C3026
FairOver: BLACK RIVER
0.01 MI TO JCT W VT103, Windsor, VT
Built 1939 Load: 41.7 t ADT: 750
VT 00011 ML
FairOver: MID. BR WILLIAMS RIVER
2.4 MI E JCT VT 121, Windsor, VT
Built 1929 Load: 41.7 t ADT: 3,100
I 00089 ML
FairOver: I 89 OVER TH3 & NECR
1.3 MI N EXIT 2, Windsor, VT
Built 1968 Load: 41.7 t ADT: 15,800
I 00091 ML
FairOver: I 91 OVER US 5
0.8 MI S EXIT 7, Windsor, VT
Built 1965 Load: 41.7 t ADT: 15,000
I 00091 ML
FairOver: OTTAUQUECHEE RIVER
3.5 MI S I 91-I 89 INTERS, Windsor, VT
Built 1966 Load: 41.7 t ADT: 19,800
I 00091 ML
FairOver: OTTAUQUECHEE RIVER
3.5 MI S I 91-I 89 INTERS, Windsor, VT
Built 1966 Load: 41.7 t ADT: 19,800
C3007
FairOver: GREENDALE BROOK
3.41 MI TO JCT W VT100, Windsor, VT
Built 1940 Load: 42.6 t ADT: 10
I 00091 ML
FairOver: I 91 OVER US 5
3.6 MI S I 91-I 89 INTERS, Windsor, VT
Built 1966 Load: 42.6 t ADT: 19,800
I 00091 ML
FairOver: I 91 OVER US 5
3.6 MI S I 91-I 89 INTERS, Windsor, VT
Built 1966 Load: 42.6 t ADT: 19,800
TR 0TH51
FairOver: TH NO 51 OVER I 91
3.4 MI S EXIT 8, Windsor, VT
Built 1965 Load: 42.6 t ADT: 150
C3010
FairOver: SO BR WILLIAMS RIVER
0.25 MI TO JCT W C3 TH63, Windsor, VT
Built 1939 Load: 44.5 t ADT: 60
I 00089 ML
FairOver: I 89 OVER TH17&FAY BK
0.5 MI N EXIT 2, Windsor, VT
Built 1968 Load: 45.4 t ADT: 15,800
VT 00012 ML
FairOver: LOCUST CREEK
2.1 MI S JCT. VT.107 W, Windsor, VT
Built 1959 Load: 45.4 t ADT: 920
US 00004 ML
FairOver: OTTAUQUECHEE RIVER
0.3 MI W JCT VT 100A, Windsor, VT
Built 1962 Load: 46.3 t ADT: 4,100
I 00089 ML
FairOver: I 89 OVER WR&NEC RR & 14
3.1 MI N EXIT 1A, Windsor, VT
Built 1967 Load: 46.3 t ADT: 18,800
I 00089 ML
FairOver: I 89 OVER WR&NECR&14
3.1 MI N EXIT 1A, Windsor, VT
Built 1967 Load: 46.3 t ADT: 18,800
VT 00012 ML
FairOver: GULF STREAM
3.0 MI N JCT. U.S.4, Windsor, VT
Built 1956 Load: 46.3 t ADT: 1,600
VT 00100 ML
FairOver: BLACK RIVER
0.9 MI S JCT. VT.100A, Windsor, VT
Built 1948 Load: 47.2 t ADT: 1,400
VT 00106 ML
FairOver: BLACK RIVER
0.9 MI S JCT. VT.10, Windsor, VT
Built 1958 Load: 47.2 t ADT: 5,600
VT 00044 ML
FairOver: MILL BROOK
2.7 MI E JCT. VT.106, Windsor, VT
Built 1945 Load: 47.2 t ADT: 1,300
VT 00106 ML
FairOver: HEDGEHOG BROOK
1.9 MI S JCT. U.S.4, Windsor, VT
Built 1939 Load: 47.2 t ADT: 2,800
TR 01 FAS 166
FairOver: MILL BROOK
2.6 MI W JCT. VT.14, Windsor, VT
Built 1919 Load: 47.2 t ADT: 390
C3356
FairOver: JEWELL BROOK
0.01 MI TO JCT W CL1 TH2, Windsor, VT
Built 1937 Load: 48.1 t ADT: 600
I 00089 ML
FairOver: I 89 OVER TH17&FAY BK
0.5 MI N EXIT 2, Windsor, VT
Built 1968 Load: 48.1 t ADT: 15,800
C3022
FairOver: HUBBARD BROOK
@ JCT W CL2 TH3, Windsor, VT
Built 1919 Load: 49.0 t ADT: 30
US 00004 ML
FairOver: OTTAUQUECHEE RIVER
1.4 MI E JCT. VT.100 S, Windsor, VT
Built 1961 Load: 49.9 t ADT: 4,100
C3008
FairOver: LAKE RESCUE
0.18 MI TO JCT W VT100, Windsor, VT
Built 1948 Load: 50.8 t ADT: 150
C3013
FairOver: BLACK RIVER
0.01 MI TO JCT W VT100, Windsor, VT
Built 1974 Load: 50.8 t ADT: 20
C2002
FairOver: BLACK RIVER
0.01 MI TO JCT W VT100, Windsor, VT
Built 1928 Load: 50.8 t ADT: 440
VT 00103 ML
FairOver: BLACK RIVER
0.3 MI S JCT. VT.131, Windsor, VT
Built 1960 Load: 50.8 t ADT: 5,200
I 00089 ML
FairOver: I 89 OVER TH 3 & NECR
1.3 MI N EXIT 2, Windsor, VT
Built 1968 Load: 50.8 t ADT: 15,800
VT 0044A
FairOver: I 91 UNDER VT 44A
0.9 MI WEST U.S.5, Windsor, VT
Built 1965 Load: 50.8 t ADT: 1,200
C3006
FairOver: MILL BROOK
0.55 MI TO JCT W VT44, Windsor, VT
Built 1974 Load: 51.7 t ADT: 300
US 00004 ML
FairOver: OTTAUQUECHEE RIVER
1.1 MI E JCT. VT.100 S, Windsor, VT
Built 1961 Load: 52.6 t ADT: 4,100
US 00004 ML
FairOver: I 89 UNDER US 4
3.1 MI W JCT. U.S.5 S, Windsor, VT
Built 1967 Load: 52.6 t ADT: 7,100
VT 00107 ML
FairOver: LOCUST CREEK
0.1 MI E JCT. VT.12 S, Windsor, VT
Built 1959 Load: 52.6 t ADT: 4,200
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.