From Longman Dictionary of Contemporary Englishswing bridgeˌswing ˈbridge noun [countable] British EnglishTBTTW a bridge that can be pulled up for tall ships to go under it
Examples from the Corpus
swing bridge• A wrought-iron girder swing bridge at the Northern Entrance Lock may be the original installed by Brunel.• At the dock's entrance is a cast-iron swing bridge.• It was five minutes to eight when Yanto cycled over the low swing bridge on to the wharfs of Sharpness Docks.• Two bascule bridges and one swing bridge further upstream had become totally inadequate.• A bloke jumped out of the boat, ran past me, over the swing bridge and opened it up. 