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Keniston Bridge
Merrimack County, New Hampshire · over the Blackwater River · built 1882
| Item | Of record | Source |
|---|---|---|
| Crosses | Blackwater River | National Bridge Inventory, 2025 file |
| Road carried | Bridge Road | National Bridge Inventory, 2025 file |
| Carries | Vehicle bridge (public road) | As recorded — see access notes below |
| Year built | 1882 | National Bridge Inventory, 2025 file |
| Length | 65 ft | National Bridge Inventory structure length, out-to-out, 2025 file |
| Longest span | 52 ft | National Bridge Inventory, 2025 file |
| Vertical clearance | 11 ft 9 in | National Bridge Inventory minimum vertical clearance over the roadway, as recorded (converted from metres) |
| Coordinates | 43.43516, -71.83606 Google Maps · OpenStreetMap | National Park Service, National Register GIS |
| Historic listing | National Register of Historic Places, listed 1989-03-16 (reference #89000190) | National Park Service |
| How it qualifies | National Register listing verified against the property's nomination (NPGallery federal record), which describes it as a covered bridge | See About & method |
Access & restrictions — as recorded
Open, no restriction
| Posting appraisal | Not posted for load — operating rating at or above legal loads |
| Structural operating rating (not the posted limit) | 27.8 metric tons (about 31 US tons) |
| Vertical clearance | 11 ft 9 in |
Source: FHWA National Bridge Inventory, 2025 annual file; record inspected Oct 2024. The record’s inspection date is Oct 2024. Status checked November 12, 2026. Postings and closures change — obey the signs at the bridge.