C3704 over Whetstone Brook
Windham County, Vermont · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- C3704 over Whetstone Brook in Windham 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 1981, making it 44 years old at the 2025 inventory.
- It carries about 400 vehicles a day (traffic count year 2019).
- Its listed owner is a town or township highway agency.
- It is one of 166 of the 338 inventoried bridges in Windham County rated fair (49.1%); 23 (6.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (deck 7 to 6).
- Its most recent inspection on record is dated September 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 → (42.85946, -72.60247)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 49 ft |
| Location | 0.01 Mi to Jct W TH704 |
| NBI structure number | 101302001113021 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Vermont department of transportation.
Busiest bridges in Windham County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 00091 Ml over I 91 over Th No 5 | 2017 | 24,200 | Good |
| I 00091 Ml over I 91 over Vt 30 Westr | 2017 | 24,200 | Good |
| I 00091 Ml over I 91 NB over Maple St | 1960 | 19,400 | Good |
| I 00091 Ml over I 91 SB over Maple St | 1960 | 19,400 | Good |
| I 00091 Ml over I 91 over Williams St | 2012 | 19,400 | Good |
| I 00091 Ml over I 91 over Williams St | 2012 | 19,400 | Good |
All bridges nearby: Windham County, VT bridge conditions · every bridge in Windham County · Vermont bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.