Bridge conditions in Grand Isle County, Vermont
8 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Grand Isle County is one of the counties with a clean sheet: 8 bridges on the federal inventory and not one rated poor. 3 carry a fair rating, which means wear worth watching but no structural deficiency.
- 0 of the 8 bridges in Grand Isle County, Vermont, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 5 bridges (62.5%) are rated good and 3 (37.5%) fair.
- The median Grand Isle County bridge was built in 1987.
Good 62.5% · Fair 37.5% · Poor 0.0% of 8 bridges
Bridges rated poor
No bridges in this county carry a poor rating in the current inventory.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 00002 Ml over Lake Champlain | 1960 | 9,400 | Fair |
| Vt 00078 Ml over Missisquoi Bay | 2007 | 6,300 | Good |
| Vt 00078 Ml over Mud Creek | 1938 | 5,300 | Good |
| US 00002 Ml over Lake Champlain | 1987 | 4,200 | Good |
| US 00002 Ml over Lake Champlain | 2022 | 3,000 | Good |
| US 00002 Ml over Alburgh Passage | 1954 | 2,500 | Fair |
| Vt 00129 Ml over Isle Lamotte Passage | 1955 | 1,600 | Fair |
| C3015 over Mud Creek | 2009 | 100 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Vermont: Vermont bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.