The Charente (Occitan: Charanta) is a 381 km long river in southwestern France. Its source is in the Haute-Vienne département at Chéronnac, a small village near Rochechouart. It flows through the departments of Haute-Vienne, Charente, Vienne and Charente-Maritime. The river flows into the Atlantic Ocean near Rochefort.
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 stone slab or a wood plank 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, prestressed or post-tensioned.
Types of construction could include having many beams side by side with a deck across the top of them, to a main beam either side supporting a deck between them. The main beams could be I-beams (also known as H-beams), trusses, or box girders. They could be half-through, or braced across the top to create a through bridge.