I 91 SB over Hwy Island Rd
Hampshire County, Massachusetts · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 91 SB over Hwy Island Rd in Hampshire County, Massachusetts, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 27,446 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 171 of the 258 inventoried bridges in Hampshire County rated fair (66.3%); 25 (9.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (42.29187, -72.6281)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 61 ft |
| Location | Mm 21.7 on I-91 SB |
| NBI structure number | N190560YXDOTNBI |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Massachusetts department of transportation.
Busiest bridges in Hampshire County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 91 NB over Hwy Old Ferry Rd | 1965 | 36,140 | Fair |
| I 91 SB over Hwy Old Ferry Rd | 1965 | 36,140 | Fair |
| St 10 Northmptn St over Water Manhan River | 1951 | 31,100 | Fair |
| St 9 Russell St over Water Connecticut River | 1937 | 30,785 | Fair |
| St 32 West St over Water Muddy Brook | 1966 | 29,870 | Fair |
| I 91 NB over Hwy Island Rd | 1965 | 27,903 | Fair |
All bridges nearby: Hampshire County, MA bridge conditions · every bridge in Hampshire County · Massachusetts bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.