Vt 00011 Ml over Lyman Brook
Windsor County, Vermont · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Vt 00011 Ml over Lyman Brook in Windsor 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 1929 and reconstructed in 1972, making it 96 years old at the 2025 inventory.
- It carries about 3,100 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 241 of the 483 inventoried bridges in Windsor County rated fair (49.9%); 26 (5.4%) 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 June 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (43.25762, -72.71645)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 27 ft |
| Location | 3.1 Mi E Jct Vt 121 |
| NBI structure number | 200016004014012 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Vermont department of transportation.
Busiest bridges in Windsor County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 00089 Ml over I 89 over Th No 78 | 1965 | 42,000 | Good |
| I 00091 Ml over I 91 over US 5 | 2015 | 31,000 | Good |
| I 00091 Ml over I 91 over US 5 | 2015 | 31,000 | Good |
| I 00089 Ml over I 89 over Th No 46 | 1967 | 26,000 | Good |
| I 00089 Ml over I 89 over US 5 | 1966 | 26,000 | Fair |
| I 00089 Ml over I 89 over US 5 | 1966 | 26,000 | Fair |
All bridges nearby: Windsor County, VT bridge conditions · every bridge in Windsor County · Vermont bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.