Vt 00078 Ml over Missisquoi Bay
Grand Isle County, Vermont · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Vt 00078 Ml over Missisquoi Bay in Grand Isle County, Vermont, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2007, making it 18 years old at the 2025 inventory.
- It carries about 6,300 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 5 of the 8 inventoried bridges in Grand Isle County rated good (62.5%); 0 (0.0%) 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 July 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (44.97289, -73.21992)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 3,585 ft |
| Location | 3.0 Mi E Jct. U.S.2 |
| NBI structure number | 200036000207012 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| 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 Grand Isle County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 00002 Ml over Lake Champlain | 1960 | 9,400 | Fair |
| 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 |
All bridges nearby: Grand Isle County, VT bridge conditions · every bridge in Grand Isle County · Vermont bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.