Bridge over the river or bridge on the river which is correct grammar usage
1 Answer
If you ask Vanguard Press, it's "over." They published the English version of Pierre Boulle's Le Pont de la Rivière Kwai as The Bridge over the River Kwai. If you ask David Lean, it's "on." He directed the film adaptation of Boulle's novel as The Bridge on the River Kwai.
Both prepositions are idiomatic in this usage, but both the google on the web and the Ngram viewer show that "over" is favored.