How Does a Bridge Promote Erosion in a Channel

question 47

Multiple Choice

How does a bridge promote erosion in a channel?

• A)The bridge pilings interfere with the water flow, causing additional sediments to be deposited.
• B)The water velocity decreases, due to restricted flow over the floodplain.
• C)The water velocity increases, due to restricted flow over the floodplain.
• D)The channel height decreases, and large particles fall out, creating more surfaces for erosion to occur.
• E)A bridge does not promote erosion.

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