Total bridges
337
Public highway bridges in Windham County
County profile · official public datasets
Windham County, VT
337 public highway bridges tracked in the FHWA National Bridge Inventory: 52.2% rated Good, 42.7% Fair, 5% Poor.
- 337
- Public bridges
- 52.2%
- Good condition
- 5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Windham County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 14th
- of 14 on Poor share
- 5%
- Poor-condition share
- 337
- public highway bridges
- 1960
- 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.
Windham County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Windham County ranks #14 of 14 Vermont counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5%). Windham County, Vermont contains 337 public highway bridges. Roughly 52.2% are rated “Good,” 42.7% “Fair,” and 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
52.2%
176 of 337 rated 7-9
Fair condition
42.7%
144 of 337 rated 5-6
Poor condition
5%
17 of 337 rated 4 or below
In-state Poor-share rank
#14 of 14
Among Vermont counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 337 NBI-tracked bridges by lowest applicable component rating.
Good 52.2% (176)
Fair 42.7% (144)
Poor 5% (17)
Windham County's Poor-condition bridges carry 37,593 vehicle crossings a day
That is 3.7% of the county's reported daily bridge traffic on 5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,211 crossings a day against 3,006 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 337 of 337 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
66.8% of Windham County's bridges have passed the 50-year mark
225 of the 337 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 52.2% 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 35.1% of the county's Poor-condition bridge traffic
I 00091 ML over I 91 OVER TH 1 SAXTON, built 1963, carries 13,200 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 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 37,593 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Windham County's bridges were built
337 bridges with a recorded construction year, grouped by decade
- pre-1900 6
Built before 1900
6 bridges
- 1900s 3
1900–1909
3 bridges
- 1910s 15
1910–1919
15 bridges
- 1920s 17
1920–1929
17 bridges
- 1930s
1930–1939
88 bridges
- 1940s 18
1940–1949
18 bridges
- 1950s 30
1950–1959
30 bridges
- 1960s
1960–1969
42 bridges
- 1970s 23
1970–1979
23 bridges
- 1980s 22
1980–1989
22 bridges
- 1990s 23
1990–1999
23 bridges
- 2000s 11
2000–2009
11 bridges
- 2010s
2010–2019
37 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1930s, when 88 of the county's bridges still in the inventory were built, which is 26.1% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year (1960) matches the Vermont average (1964).
How Windham County compares with Vermont's closest counties by inventory size
The 5 Vermont counties nearest Windham County in number of bridges, with their condition splits. Its 5% Poor share is the 6th-lowest of these 6. Its average build year of 1960 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 |
|---|---|---|---|---|---|
| Windham County (this page) | 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 |
| Orange County | 208 | 50.5% | 47.6% | 1.9% | 1959 |
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 Windham 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 Windham County, both outside Vermont so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside VT (337 bridges here).
- Placer County, CA · 337 bridges
- Tama County, IA · 337 bridges
- Cowley County, KS · 337 bridges
- Ouachita County, LA · 337 bridges
Similar average build year
Nearest mean year-built outside VT (1960 here).
- Plymouth County, MA · avg 1960 · 287 bridges
- Cheshire County, NH · avg 1960 · 192 bridges
- Washington County, NY · avg 1960 · 189 bridges
- Cherokee County, AL · avg 1960 · 167 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (144)
I 00091 ML
FairOver: I 91 OVER TH NO 46
1.5 MI S EXIT 6, Windham, VT
Built 1963 Load: 38.1 t ADT: 13,200
TR 02 FAS 126
FairOver: SAXTONS RIVER
2.8 MI E JCT VT 11, Windham, VT
Built 1940 Load: 39.0 t ADT: 120
ROAD
FairOver: CASTLE BROOK
NO DATA ENTERED, Windham, VT
Built 1995 Load: 39.5 t ADT: 10
C2003
FairOver: BILL BROOK
0.05 MI TO JCT W C3 TH19, Windham, VT
Built 1936 Load: 39.9 t ADT: 1,120
CITY WILMS
FairOver: WHETSTONE BROOK
WILLIAMS STREET, Windham, VT
Built 1939 Load: 39.9 t ADT: 910
C3024
FairOver: TURKEY MOUNTAIN BRK.
AT JCT TH 24 & TH 18, Windham, VT
Built 1979 Load: 41.7 t ADT: 10
C3006
FairOver: SAXTONS RIVER
0.04 MI TO JCT W VT121, Windham, VT
Built 1939 Load: 42.6 t ADT: 50
C3041
FairOver: COOK BROOK
0.7 MI W JCT VT 100, Windham, VT
Built 1982 Load: 42.6 t ADT: 125
VT 00112 ML
FairOver: E. BR. OF NORTH RIVER
1.0 MI S JCT. VT.100, Windham, VT
Built 1939 Load: 42.6 t ADT: 1,700
C3054
FairOver: ELLIS BROOK
0.02 MI TO JCT W CL2 TH2, Windham, VT
Built 1970 Load: 44.5 t ADT: 30
US 00005 ML
FairOver: SACKETTS BROOK
0.5 MI N I91 EXIT 4, Windham, VT
Built 1954 Load: 44.5 t ADT: 3,000
I 00091 ML
FairOver: I 91 OVER WSTMSTER SH
I 91 EXIT 5, Windham, VT
Built 1963 Load: 45.4 t ADT: 11,800
I 00091 ML
FairOver: I 91 OVER WSTMSTER SH
I 91 EXIT 5, Windham, VT
Built 1963 Load: 45.4 t ADT: 11,800
VT 00030 ML
FairOver: TURKEY MT. BROOK
0.3 MI N JCT. VT.100 S, Windham, VT
Built 1938 Load: 48.1 t ADT: 2,700
I 00091 ML
FairOver: I 91 OVER TH NO 3
1.5 MI N EXIT 4, Windham, VT
Built 1961 Load: 48.1 t ADT: 11,800
VT 00100 ML
FairOver: WEST RIVER
2.9 MI S JCT. VT.11 W, Windham, VT
Built 1936 Load: 49.0 t ADT: 2,000
I 00091 ML
FairOver: I 91 OVER VT 103
I 91 EXIT 6, Windham, VT
Built 1963 Load: 49.0 t ADT: 15,000
TR 00TH4
FairOver: TH NO 4 OVER I 91
1.8 MI S EXIT 5, Windham, VT
Built 1963 Load: 49.9 t ADT: 300
US 00005 ML
FairOver: I 91 UNDER US 5
0.6 MI N JCT. VT.9 E, Windham, VT
Built 1961 Load: 50.8 t ADT: 8,200
C3051
FairOver: COOK BROOK
0.3 MI JCT TH 51 & VT100, Windham, VT
Built 1974 Load: 51.7 t ADT: 100
C3067
FairOver: S. WARDSBORO BROOK
0.05 MI TO JCT W CL2 TH2, Windham, VT
Built 1981 Load: 51.7 t ADT: 75
I 00091 ML
FairOver: SACKETTS BROOK
0.3 MI N EXIT 4, Windham, VT
Built 1961 Load: 51.7 t ADT: 11,800
I 00091 ML
FairOver: SACKETTS BROOK
0.3 MI N EXIT 4, Windham, VT
Built 1961 Load: 51.7 t ADT: 11,800
I 00091 ML
FairOver: I 91 OVER TH NO 3
1.5 MI N EXIT 4, Windham, VT
Built 1961 Load: 51.7 t ADT: 11,800
I 00091 ML
FairOver: I 91 OVER TH 1 SAXTON
2.4 MI N EXIT 5, Windham, VT
Built 1963 Load: 51.7 t ADT: 13,200
I 00091 ML
FairOver: I 91 OVER BRATT.SH
I 91 EXIT 3, Windham, VT
Built 1960 Load: 52.6 t ADT: 16,600
TR 0TH36
FairOver: TH NO 36 OVER I 91
0.2 MI S EXIT 3, Windham, VT
Built 1960 Load: 52.6 t ADT: 600
C3047
FairOver: BAKER BROOK
0.02 MI TO JCT W C3 TH19, Windham, VT
Built 1920 Load: 53.5 t ADT: 100
I 00091 ML
FairOver: I 91 OVER VT 103
I 91 EXIT 6, Windham, VT
Built 1963 Load: 53.5 t ADT: 15,000
VT 00009 ML
FairOver: I 91 UNDER VT 9
I 91 EXIT 2, Windham, VT
Built 1960 Load: 54.4 t ADT: 12,600
I 00091 ML
FairOver: I 91 OVER TH NO 46
1.5 MI S EXIT 6, Windham, VT
Built 1963 Load: 54.4 t ADT: 13,200
TR 01 FAS 125
FairOver: SAXTONS RIVER
1.2 MI E JCT. VT.35 N, Windham, VT
Built 1937 Load: 54.4 t ADT: 810
I 00091 ML
FairOver: I 91 OVER BRATT.SH
I 91 EXIT 3, Windham, VT
Built 1960 Load: 55.3 t ADT: 16,600
US 00005 ML
FairOver: BROOK
0.1 MI S JCT. VT.9 E, Windham, VT
Built 1959 Load: 55.3 t ADT: 14,600
I 00091 ML
FairOver: I 91 OVER US 5
I 91 EXIT 1, Windham, VT
Built 1959 Load: 59.0 t ADT: 18,300
I 00091 ML
FairOver: I 91 OVER TH 50 PUT B
3.1 MI N EXIT 4, Windham, VT
Built 1961 Load: 59.0 t ADT: 11,800
I 00091 ML
FairOver: I 91 OVER TH 50&PUT BRK
3.1 MI N EXIT 4, Windham, VT
Built 1961 Load: 59.0 t ADT: 11,800
NH123
FairOver: CONNECTICUT RIVER
VERMONT STATE LINE, Windham, VT
Built 1910 Load: 59.1 t ADT: 5,698
I 00091 ML
FairOver: I 91 OVER US 5
I 91 EXIT 1, Windham, VT
Built 1959 Load: 60.8 t ADT: 18,300
C2001
FairOver: BALL MTN. BROOK
1.0 MI TO JCT W VT30, Windham, VT
Built 1939 Load: 63.5 t ADT: 150
VT 00030 ML
FairOver: SMITH BROOK
5.2 MI S JCT. VT.35, Windham, VT
Built 1945 Load: 65.3 t ADT: 5,700
VT 00030 ML
FairOver: ROCK RIVER
8.9 MI N JCT. U.S.5, Windham, VT
Built 1972 Load: 66.2 t ADT: 5,900
VT 00030 ML
FairOver: WINHALL RIVER
0.4 MI N JCT. VT.100 N, Windham, VT
Built 1986 Load: 66.2 t ADT: 3,500
C3029
FairOver: MILL BROOK
0.1 MI JCT TH 29 & VT 35, Windham, VT
Built 1939 Load: 69.9 t ADT: 60
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.