Hayden Bridge
Benton County, Oregon · over the Alsea River · built 1945
| Item | Of record | Source |
|---|---|---|
| Crosses | Alsea River | National Bridge Inventory, 2025 file |
| Road carried | Hayden Road | National Bridge Inventory, 2025 file |
| Carries | Vehicle bridge (public road) | As recorded — see access notes below |
| Year built | 1945 | National Bridge Inventory, 2025 file |
| Length | 151 ft | National Bridge Inventory structure length, out-to-out, 2025 file |
| Longest span | 91 ft | National Bridge Inventory, 2025 file |
| Vertical clearance | 11 ft 10 in | National Bridge Inventory minimum vertical clearance over the roadway, as recorded (converted from metres) |
| Coordinates | 44.38321, -123.63103 Google Maps · OpenStreetMap | National Park Service, National Register GIS |
| Historic listing | National Register of Historic Places, listed 1979-11-29 (reference #79002034) | 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
Posted for load
| Posting appraisal | Operating rating more than 30% below the maximum legal load |
| Structural operating rating (not the posted limit) | 11.7 metric tons (about 13 US tons) |
| Vertical clearance | 11 ft 10 in |
Source: FHWA National Bridge Inventory, 2025 annual file. 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.