1. (人行)天桥：opinion poll 民意测验 | overpass (人行)天桥 | overseas student 留学生

2. 上跨路;高架道路：overload 超荷载;超重;超载;负荷过重 | overpass 上跨路;高架道路 | overstress 超限应力

3. 立交桥：卫星城satellite city | 立交桥overpass | 房地产开发exploitation of real estate

4. 上跨桥：overlying ground 上面覆盖 | overpass 上跨桥 | overpass for pedestrians 高架人行道

1. 天桥；跨线桥；上跨式立交桥
An overpass is a structure which carries one road over the top of another one.

e.g. ...a $16 million highway overpass over Route
1.
造价1,600万美元的1号公路上的上跨公路桥

noun

1. bridge formed by the upper level of a crossing of two highways at different levels

Synonym: flyover