Total bridges
259
Public highway bridges in Hampshire County
County profile · official public datasets
Hampshire County, MA
259 public highway bridges tracked in the FHWA National Bridge Inventory: 25.1% rated Good, 66% Fair, 8.9% Poor.
- 259
- Public bridges
- 25.1%
- Good condition
- 8.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Hampshire County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 9th
- of 13 on Poor share
- 8.9%
- Poor-condition share
- 259
- public highway bridges
- 1959
- 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.
Hampshire County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Hampshire County ranks #9 of 13 Massachusetts counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.9%). Hampshire County, Massachusetts contains 259 public highway bridges. Roughly 25.1% are rated “Good,” 66% “Fair,” and 8.9% “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
25.1%
65 of 259 rated 7-9
Fair condition
66%
171 of 259 rated 5-6
Poor condition
8.9%
23 of 259 rated 4 or below
In-state Poor-share rank
#9 of 13
Among Massachusetts counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 259 NBI-tracked bridges by lowest applicable component rating.
Good 25.1% (65)
Fair 66% (171)
Poor 8.9% (23)
Hampshire County's Poor-condition bridges carry 148,211 vehicle crossings a day
That is 8.4% of the county's reported daily bridge traffic on 8.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 6,737 crossings a day against 4,366 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 258 of 259 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
75.7% of Hampshire County's bridges have passed the 50-year mark
196 of the 259 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 25.1% 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 20.1% of the county's Poor-condition bridge traffic
I 91 SB over COMB US 5 & GWRR, built 1965, carries 29,780 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 23-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 148,211 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Hampshire County's bridges were built
259 bridges with a recorded construction year, grouped by decade
- pre-1900 8
Built before 1900
8 bridges
- 1900s 2
1900–1909
2 bridges
- 1910s 6
1910–1919
6 bridges
- 1920s 17
1920–1929
17 bridges
- 1930s
1930–1939
36 bridges
- 1940s 22
1940–1949
22 bridges
- 1950s
1950–1959
60 bridges
- 1960s
1960–1969
38 bridges
- 1970s 12
1970–1979
12 bridges
- 1980s 7
1980–1989
7 bridges
- 1990s 13
1990–1999
13 bridges
- 2000s 21
2000–2009
21 bridges
- 2010s 13
2010–2019
13 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1950s, when 60 of the county's bridges still in the inventory were built, which is 23.2% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1959) matches the Massachusetts average (1961).
How Hampshire County compares with Massachusetts's closest counties by inventory size
The 5 Massachusetts counties nearest Hampshire County in number of bridges, with their condition splits. Its 8.9% Poor share is the 4th-lowest of these 6. Its average build year of 1959 against a peer-group mean of 1961 is in line with the group.
Showing the 5 closest of 12 Massachusetts counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Essex County | 395 | 15.9% | 66.8% | 17.2% | 1957 |
| Bristol County | 384 | 30.2% | 63.3% | 6.5% | 1962 |
| Norfolk County | 343 | 23.6% | 71.4% | 5% | 1962 |
| Franklin County | 314 | 34.4% | 54.5% | 11.1% | 1964 |
| Plymouth County | 287 | 30.7% | 63.4% | 5.9% | 1960 |
| Hampshire County (this page) | 259 | 25.1% | 66% | 8.9% | 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 Hampshire 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 Hampshire County, both outside Massachusetts so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MA (259 bridges here).
- Apache County, AZ · 259 bridges
- Gila County, AZ · 259 bridges
- Ellsworth County, KS · 259 bridges
- Dakota County, MN · 259 bridges
Similar average build year
Nearest mean year-built outside MA (1959 here).
- Tulare County, CA · avg 1959 · 589 bridges
- Barton County, KS · avg 1959 · 449 bridges
- Nassau County, NY · avg 1959 · 328 bridges
- Marion County, KS · avg 1959 · 324 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (171)
ST116
FairOver: WATER MILL RIVER
1.5 M S SUND-AMHERST T.L., Hampshire, MA
Built 1958 Load: 63.5 t ADT: 10,921
HWY RYAN RD
FairOver: WATER PARSONS BROOK
AT PARSONS BROOK, Hampshire, MA
Built 1956 Load: 64.3 t ADT: 4,138
HWY MEADOW ST
FairOver: WATER MILL RIVER
AT JCT. ST. 116, Hampshire, MA
Built 1958 Load: 64.8 t ADT: 10,474
HWY MEADOW ST
FairOver: WATER SWAMP BROOK
0.3 MI EAST OF HADLEY TL, Hampshire, MA
Built 2007 Load: 65.1 t ADT: 6,071
ST 66 WEST ST
FairOver: WATER MILL RIVER
.4 MI W JCT ST 9, Hampshire, MA
Built 1924 Load: 70.3 t ADT: 11,767
ST143 MAIN RD
FairOver: WATER DEAD BR WSTFLD RIV
850 W. OF BISBEE RD, Hampshire, MA
Built 1959 Load: 73.2 t ADT: 4,138
ST112 WORTHGTN RD
FairOver: WATER WESTFIELD RIVER
AT MONTGOMERY ROAD, Hampshire, MA
Built 1921 Load: 73.4 t ADT: 3,245
ST 21 JABISH ST
FairOver: WATER JABISH BROOK
.1 M W JCT ST 9, Hampshire, MA
Built 1956 Load: 73.7 t ADT: 4,650
ST116
FairOver: WATER MILL RIVER
1 M S AMHERST-HADLY T.L., Hampshire, MA
Built 1958 Load: 74.5 t ADT: 24,181
HWY PLEASANT ST
FairOver: WATER MUDDY BROOK
.7 MI W OF RTE 9, Hampshire, MA
Built 1935 Load: 77.9 t ADT: 646
HWY BLISS ST
FairOver: WATER MILL RIVER
200 SOUTH OF NONOTUCK ST, Hampshire, MA
Built 2005 Load: 78.4 t ADT: 3,103
HWY S EAST ST
FairOver: WATER FORT RIVER
1.6 MI W PELHAM, Hampshire, MA
Built 1973 Load: 99.9 t ADT: 4,784
HWY STATE ST
FairOver: WATER MILL RIVER
1M E OF RT63 @FCTRY HLLOW, Hampshire, MA
Built 1968 Load: 99.9 t ADT: 259
HWY SOUTH ST
FairOver: WATER DEAD BR WSTFLD RIV
.1 MI SOUTH OF COWPER RD, Hampshire, MA
Built 1979 Load: 99.9 t ADT: 388
HWY AMHERST ST
FairOver: WATER ALDRICH LAKE
.5 MI S OF RTE 116, Hampshire, MA
Built 1952 Load: 99.9 t ADT: 10,086
HWY SCHOOL ST
FairOver: WATER BACHELOR BROOK
0.6 MI N OF RT 202, Hampshire, MA
Built 1956 Load: 99.9 t ADT: 3,646
HWY S MAPLE ST
FairOver: WATER FORT RIVER
1.1 MI. SO. OF RTE. 9, Hampshire, MA
Built 1957 Load: 99.9 t ADT: 6,538
HWY N VALLEY RD
FairOver: WATER AMETHYST BROOK
1400 N OF INT AMHERST RD, Hampshire, MA
Built 1953 Load: 99.9 t ADT: 1,646
US202 GRANBY RD
FairOver: WATER BUTTERY BROOK
250 W RT 202/116 BRDG, Hampshire, MA
Built 1958 Load: 99.9 t ADT: 16,552
HWY FOMER RD
FairOver: WATER MANHAN RIVER
2 M W OF CROOKED LEDGE, Hampshire, MA
Built 1960 Load: 99.9 t ADT: 130
HWY SOUTHMPTN RD
FairOver: WATER SODOM BROOK
2.7 MI N OF SOUTHAMPTON, Hampshire, MA
Built 1960 Load: 99.9 t ADT: 1,034
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.