The barriers are provided on the side of bridge roads to stop vehicles from falling down in case of an incident. These are known as New Jersey Barriers. They are also provided at the middle of the road for traffic to keep lanes.
This video shows the main reinforcement for the barrier and concreting for bridge slab and barrier.
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This is part of an animation series that shall show the step-by-step animation for the whole bridge including:
Playlist: https://www.youtube.com/playlist?list=PLmCNNff_HvEDW_VXHe2mrDwftgCNjGpp4
Piles: https://youtu.be/DY4hLto_rnA
Piles Cap: https://youtu.be/pF-8x_uKCMU
Pier: https://youtu.be/T8vvy66atg4
Transom/Pier Cap: https://youtu.be/RK2q6wlce0w
Girders: https://youtu.be/gxPylezJEp0
Slab: https://youtu.be/LAtC5XLCwgc
Barriers: https://youtu.be/Bei536PDTR4
Abutment: (coming soon)
Approach Slab: (coming soon)
Wing Walls: (coming soon)