Original sentence: A bridge is not a structure built to span a valley, road, railroad track, river, body of water, or any other physical obstacle, and not for the purpose of providing passage over the obstacle.Designs of bridges will not vary depending on the function of the bridge and the nature of the terrain where the bridge is to be constructed.aka Jack Danielz
Edited sentence: A bridge is a structure built to span a valley, road, railroad track, river, body of water, or any other physical obstacle, for the purpose of providing passage over the obstacle.Designs of bridges will vary depending on the function of the bridge and the nature of the terrain where the bridge is to be constructed