I-89 NB over Heater Road
Fair Condition60 years old16,261 vehicles/day
Location
| State | New Hampshire |
| County | Grafton |
| Location | 0.6 Mi From Hardy Hill RD |
| Carries | I-89 NB |
| Crosses | Heater Road |
| Coordinates | 43.64556, -72.23398 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 186.0 ft (56.7 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 731.4 sq m |
| Main Spans | 3 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 16,261 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 014401410012300 |