The bridge crosses the river in a single span.

河上的桥为单跨桥。

《牛津词典》

There footbridges made with bamboo planks and binding materials span chasms and river systems to enable the travel and commerce of locals living in remote areas.

在那里，用竹板和捆绑材料做成的人行桥跨越沟壑和河流，以便当地居民与远方地区的贸易往来。

youdao

A 1, 900-foot span across the Colorado River shadows the Hoover dam.

跨度1900英尺，横穿科罗拉多河胡佛大坝的水库。

youdao

The most expensive of the two options includes a new seating area, festival, river trail, a schools project and a viewing platform that would allow people to "enjoy the full span of the River Ness", according to a report to Highland councillors.

BBC: Plans for public art for Inverness flood scheme

Jim Buchanan, the leader of Cumbria County Council, said the new footbridge bridge, which will span the River Derwent, would be an important boost for the community.

BBC: Flooded town's new bridge on move

Impressionists favor the clear light of midafternoon, and instead of focusing on panoramic views, they concentrate on the quality of natural light reflected on specific surfaces a single copse of trees, a short span of running river, a group of village houses and rooftops.

WSJ: Nature in America | A Landscape in Evolution | By Barrymore Laurence Scherer