road bridge; highway overpass
Refers to a bridge carrying a road, especially an overpass crossing another road or railway. Often used in technical or civil engineering contexts.
This road bridge passes over the expressway.
Construction of the new road bridge will begin next month.
Compound of 道路 (road) and 橋 (bridge). The reading どうろきょう is a straightforward combination of the on'yomi readings of the kanji.