And this bridge was symbolic of what encompassed the entire marsh--the railways, hefted high over the swamps, on viaducts on which the trains... The dictionary has more than 3 possible meanings all of which have to do with weight... but none of which really go together with the sentence... I can't quite figure out which meaning is the closest, please help!
Heaved. Hoisted. It's a verb, so look at the verb meanings in the dictionary.
