From Wikipedia, the free encyclopedia
| Beams bridge |
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| This footbridge was made from beams and boards obtained from logs from the surrounding forest. |
| Ancestor: |
Log bridge |
| Related: |
None |
| Descendant: |
Box girder bridge, Plate girder bridge, trestle, truss bridge, moon bridge |
| Carries: |
Pedestrians, automobiles, trucks, light rail, heavy rail |
| Span range: |
Short |
| Material: |
Timber, iron, steel, reinforced concrete, prestressed concrete |
| Movable: |
No |
| Design effort: |
low |
| Falsework required: |
No, unless cast-in place reinforced concrete is used |
A beam bridge is a direct descendant of the log bridge, now more normally made from shallow steel 'I' beams, box girders, reinforced concrete, or post-tensioned concrete. It is frequently used in pedestrian bridges and for highway overpasses and flyovers. As is its ancestor, this bridge is in structural terms the simplest of the many bridge types.
Like most bridges that are characterized by how they are supported, beam bridges consist of one horizontal beam with 2 supports usually on either end.
Decorative beam bridges, commonly built from cedar, pine, and redwood, can span a koi pond or country creek. These free standing bridges are usually built as functional walkways or just for decoration.
A steel pedestrian footbridge over a busy road in
Swansea, typical of many beam bridges (the superstructure supports only the
fence, not the bridge).
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Bridge-related articles |
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| Types of bridges |
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| Lists of Bridges |
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