• Virtual Bridge Experiment
  
• Build a Straw Bridge 1
  
• Build a Straw Bridge 2
  
• Build a Paper Bridge
  
• Building Model Bridges, Activities and Lesson Plans
  
• How Much Weight Can That Bridge Take? The Impact of Structural Support Elements on the Strength of a Bridge
  
• The Floating Water Bridge
  
• Which Bridge Structure Holds the Most Mass?
  
• Bridge types of bridges and how to decide which one to use in different situations.
  
• Bridge Design Tips for Kids
  
• Bridge Truss Designer (Simulation)
  
• Investigate trusses: types, loads, tensile and compressive members
  
• What bridge design supports the most weight?
  
• Bridge lesson plan: bridge type: suspension, beam, and arch.
  

Beams bridge
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 rigid, horizontal structure that rests on two end supports, and carries traffic loads by acting structurally as a beam. It 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.

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).

Bridge-related articles
Types of bridges	Moveable bridge · Beam bridge · Cantilever bridge · Arch bridge · Suspension bridge · Cable-stayed bridge · Truss bridge · Visual index to various types
Lists of Bridges	Notable bridges · By length · Longest suspension bridge spans · Largest cable-stayed bridges · Longest cantilever bridges · Arch bridges · Bridge disasters

This article about a specific type of bridge is a stub. You can help WikiProject Bridges by expanding it.

Log Bridge
Footpath bridge in the French Alps near Vallorcine
Ancestor:	Step-stone bridge
Related:	Clapper bridge
Descendant:	Beam bridge
Carries:	Pedestrians, vehicles (on multiple parallel logs)
Span range:	Short
Material:	Logs, dry set stonework footings, top may be flattened or boards added, topped with rammed earth for vehicles
Movable:	No
Design effort:	Low
Falsework required:	No

A log bridge is a bridge that uses logs that fall naturally or are intentionally felled or placed across streams. The first manmade bridges with significant span were probably intentionally felled trees. The use of emplaced logs is now sometimes used in temporary bridges used for logging roads, where a forest tract is to be harvested and the road then abandoned. Such log bridges have a severely limited lifetime due to soil contact and subsequent rot and wood-eating insect infestation. Longer lasting log bridges may be constructed by using treated logs and/or by providing well drained footings of stone or concrete combined with regular maintenance to prevent soil infiltration. This care in construction can be seen in the bridge illustrated, which has well locked dry set stone abutments and a footpath leveled with boards.