Structure 7201140003500 · Grafton County, NH
Carries Nh112 Lost Riv RD over Clay Brook, 3.5 Mi From Landaff Tl.
Set by its lowest-rated component: Deck and Superstructure at 6 of 9.
How ratings work23 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 slab bridge.
| State | New Hampshire |
| County | Grafton |
| Location | 3.5 Mi From Landaff Tl |
| Carries | Nh112 Lost Riv RD |
| Crosses | Clay Brook |
| Coordinates | 44.07701, -71.79619 |
| Material | Concrete |
| Design | Slab |
| Total Length | 23.0 ft (7 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 71.4 sq m |
| Main Spans | 1 |
| Year Built | 1932 (reconstructed 1983) |
| Avg Daily Traffic | 1,677 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | June 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 007201140003500 |
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.