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Columbia Covered Bridge
Coos County, New Hampshire · over the Connecticut River · built 1912 · an interstate bridge, also listed from Vermont
| Item | Of record | Source |
|---|---|---|
| Crosses | Connecticut River | National Bridge Inventory, 2025 file |
| Road carried | Columbia Bridge Rd | National Bridge Inventory, 2025 file |
| Carries | Vehicle bridge (public road) | As recorded — see access notes below |
| Year built | 1912 | National Bridge Inventory, 2025 file |
| Length | 146 ft | National Bridge Inventory structure length, out-to-out, 2025 file |
| Longest span | 133 ft | National Bridge Inventory, 2025 file |
| Vertical clearance | 10 ft 8 in | National Bridge Inventory minimum vertical clearance over the roadway, as recorded (converted from metres) |
| Coordinates | 44.85354, -71.55084 Google Maps · OpenStreetMap | National Park Service, National Register GIS |
| Historic listing | National Register of Historic Places, listed 1976-12-12 (reference #76000123) | National Park Service |
| How it qualifies | Listed on the National Register of Historic Places as a covered bridge | See About & method |
Access & restrictions — as recorded
Posted for load
| Posting appraisal | Operating rating more than 30% below the maximum legal load |
| Structural operating rating (not the posted limit) | 9.8 metric tons (about 11 US tons) |
| Vertical clearance | 10 ft 8 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. The posted limit itself is set by the owning agency and shown on signs at the bridge; it is not a field in the federal record, so it is not printed here. Postings and closures change — obey the signs at the bridge.