Beam bridge

Type of bridge Beam bridgeMultispan plate girder bridge deck on concrete piers.Span rangeShortMaterialTimber, iron, steel, reinforced concrete, prestressed concreteMovableNoDesign effortLowFalsework requiredNo unless cast-in-place reinforced concrete is used Drvenija bridge, Sarajevo Beam bridges are the simplest structural forms for bridge spans supported by an abutment or pier at each end. No moments are transferred throughout the support, hence their structural type is known as simply supported. The simplest beam bridge could be a log (see log bridge), a wood plank, or a stone slab (see clapper bridge) laid across a stream. Bridges designed for modern infrastructure will usually be constructed of steel or reinforced concrete, or a combination of both. The concrete elements may be reinforced or prestressed. Such modern bridges include girder, plate girder, and box girder bridges, all of which are types of beam bridges. Types of construction could include having many beams side by side with a deck across the top of them, or a main beam on either side supporting a deck between them. The main beams could be I-beams, trusses, or box girders. They could be half-through, or braced acro