MIT + K12 Videos:

• Bridge Design and Destruction Part I- Beam and Arch Bridges
  https://youtu.be/lBP7739C83s

• Bridge Design and Destruction Part 2-Trusses and Suspension Bridges
  https://youtu.be/KBOGRxV49MQ

BUILDING BIG:BRIDGES- DAVID MACAULAY
https://youtu.be/j251BmohMBo 

• Arch Bridge
  https://mass.pbslearningmedia.org/resource/phy03.sci.phys.mfw.bbarch/arch-bridge/

• Train Truss
  https://mass.pbslearningmedia.org/resource/phy03.sci.phys.mfw.bbtrussanim/train-truss-animation/

• Cantilever Bridge
  https://mass.pbslearningmedia.org/resource/phy03.sci.phys.mfw.bbcantilever/firth-of-forth-cantilever-bridge/

• Suspension Bridge
  https://mass.pbslearningmedia.org/resource/phy03.sci.phys.mfw.bbsuspension/clifton-suspension-bridge/