Appling temporary steel bridge is a method of passing bridge which span is not bigness in heavy-cargo transportation.

“桥上桥”是大件运输中通过中小跨径桥梁的一种方法。

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There is not much clearance for vehicles passing under this bridge.

车辆在这座桥下通过时没有多少余隙。

《牛津词典》

Very warily he paddled up to the mouth of the creek, and was just passing under the bridge, when ... CRASH!

他小心翼翼地划到河湾口，正从桥下经过，突然……哗啦一声！

youdao

Two lanes of the northbound M6 and the road passing under the bridge were closed for the recovery operation.

BBC: Trailer hanging over edge of bridge on M6 in Cumbria

That same year passenger Burton Closson of Cincinnati, on the Lindau tour, got knocked in the head while the coach was passing under a bridge.

FORBES: Antique Roadshow

Migration matters too: hordes of English folk, greying and otherwise, have crossed the Severn Bridge, passing Welsh youngsters heading the other way.

ECONOMIST: Wales and Scotland at the polls