Structure 20301140013300 · Grafton County, NH
Carries Town Road #100 over Archertown Brook, 0.1 Mi Fr Miller Road.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.
How ratings work21 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a rigid-frame bridge.
| State | New Hampshire |
| County | Grafton |
| Location | 0.1 Mi Fr Miller Road |
| Carries | Town Road #100 |
| Crosses | Archertown Brook |
| Coordinates | 43.91379, -72.09304 |
| Material | Concrete |
| Design | Frame |
| Total Length | 21.3 ft (6.5 m) |
| Max Span | 19.4 ft (5.9 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 47.5 sq m |
| Main Spans | 1 |
| Year Built | 2021 |
| Avg Daily Traffic | 96 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 020301140013300 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.