Potential answers for "Big engineering project"

⭐⭐⭐⭐ DIKE
⭐⭐⭐⭐ CANAL
⭐⭐⭐ TRESTLE
⭐⭐⭐ ASWANDAM
⭐⭐⭐ DAM
⭐⭐⭐ SPAN
⭐⭐ TVA
⭐⭐ DNA

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