Nh 11 over Connecticut River
Sullivan County, New Hampshire · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nh 11 over Connecticut River in Sullivan County, New Hampshire, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1900 and reconstructed in 2016, making it 125 years old at the 2025 inventory.
- It carries about 6,519 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 79 of the 158 inventoried bridges in Sullivan County rated fair (50.0%); 9 (5.7%) 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 October 2024, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (43.26011, -72.42717)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel through truss |
| Length | about 500 ft |
| Location | Nh Vt State Line |
| NBI structure number | 004201350005200 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 7: scour countermeasures installed |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Hampshire department of transportation.
Busiest bridges in Sullivan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nh 11 NH103 over Sugar River | 1981 | 13,248 | Fair |
| Nh 11 NH103 over Sugar River | 1985 | 12,792 | Good |
| I-89 Nh 10 SB over I-89 Ramp | 1959 | 10,987 | Fair |
| I-89 Nh 10 SB over Skinner Brook | 1972 | 10,987 | Fair |
| I-89 Nh 10 SB over Miller Pond Road | 1972 | 10,987 | Good |
| I-89 SB over Nh 10 | 1972 | 10,987 | Fair |
All bridges nearby: Sullivan County, NH bridge conditions · every bridge in Sullivan County · New Hampshire bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.