I 00091 Ml over I 91 over Th No 9
Caledonia County, Vermont · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 00091 Ml over I 91 over Th No 9 in Caledonia County, Vermont, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 4,800 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 125 of the 248 inventoried bridges in Caledonia County rated fair (50.4%); 15 (6.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 6.
- Its most recent inspection on record is dated June 2024, 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 → (44.57277, -72.04171)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 32 ft |
| Location | 1.3 Mi N Exit 24 I91 |
| NBI structure number | 200091097N03072 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| 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 Vermont department of transportation.
Busiest bridges in Caledonia County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 00005 Ml over Passumpsic River | 1972 | 12,200 | Good |
| I 00091 Ml over I 91 over Th 10 Brk | 1975 | 11,900 | Good |
| I 00091 Ml over I 91 over Th 10 Brk | 1975 | 11,900 | Good |
| I 00091 Ml over I 91 over US 5 | 1974 | 11,900 | Fair |
| I 00091 Ml over I 91 over US 5 | 1974 | 11,900 | Good |
| I 00091 Ml over I 91 over US 5 | 1974 | 11,900 | Fair |
All bridges nearby: Caledonia County, VT bridge conditions · every bridge in Caledonia County · Vermont bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.