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A trestle bridge is a bridge composed of a number of short spans supported by closely spaced frames. A trestle (sometimes tressel) is a rigid frame used as a support, historically a tripod used to support a stool or a pair of isosceles triangles joined at their apices by a plank or beam such as the support structure for a trestle table.
Railway trestle bridge in Dawson Creek, British Columbia. A trestle bridge is composed of a number of short spans supported by closely spaced trestle frames. Each supporting frame is a bent. A trestle differs from a viaduct in that viaducts have towers that support much longer spans and typically have a higher elevation. [1]
Trestle or Trestles may refer to: Structures and structural elements: Trestle support, the structural element that supports a trestle bridge, trestle desk, trestle table, or similar structures; Trestle bridge, a bridge composed of trestle support elements Trestles Bridge, a railroad viaduct in California
Concrete bridge for vehicle traffic over Laguna Madre: 4 loaded barges veered 175 feet (53 m) west of the navigation channel and struck one of the bridge supports, causing a partial collapse of 3 sections measuring approximately 80 feet (24 m) each. 8 killed, 13 survivors Partial collapse The damaged section of the Queen Isabella Causeway.
In order to protect the 2012 bridge segment against corrosion, its rebar was protected by an epoxy coating and calcium nitrite was added as a corrosion inhibitor to its reinforced concrete. [12] The new concrete supports for the bridge structure are etched with letters spelling "Trestles", the nickname of the bridge. [1] [4]
Rather, bents are simply cross-sectional templates of structural members, i.e., rafters, joists, posts, pilings, etc., that repeat on parallel planes along the length of the structure. The term bent is not restricted to any particular material. Bents may be formed of wooden piles, timber framing, [2] steel framing, or even concrete. [3]
The Arboretum Sewer Trestle (also known as Arboretum Aqueduct, [2] Arboretum Aqueduct and Sewer Trestle, [3] or Wilcox Footbridge [3]) is a historic multiarched concrete-and-brick trestle and footbridge [3] in the Washington Park Arboretum in Seattle, Washington.
The conventional arch supports a vertical load downwards on the centre of the arch and translates this into forces both downwards and outwards at the base of the arch. In most cases, this sideways force is a nuisance and must be resisted by either strong foundations or a further 'bowstring' girder, in the form of a tied-arch bridge.