Earth retaining structures supporting the superstructure at the beginning and end of the structure.

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Multiple Choice

Earth retaining structures supporting the superstructure at the beginning and end of the structure.

Explanation:
End supports that retain the backfill and carry the ends of the deck are abutments. They anchor the bridge to the approach earth, resist horizontal soil pressure, and transfer the deck’s vertical loads into the foundations. A pier or pillar provides interior supports along the span, not at the ends, and the deck is the roadway itself. Therefore, the term that describes earth-retaining structures at the ends is abutment.

End supports that retain the backfill and carry the ends of the deck are abutments. They anchor the bridge to the approach earth, resist horizontal soil pressure, and transfer the deck’s vertical loads into the foundations. A pier or pillar provides interior supports along the span, not at the ends, and the deck is the roadway itself. Therefore, the term that describes earth-retaining structures at the ends is abutment.

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