A roundabout road (especially one that is used temporarily while a main route is blocked).

synonym: detour.

Roget 629: circuit, roundabout way, digression, detour, circumbendibus, ambages^†, loop; winding etc. (circuition) 311^†; zigzag etc. (deviation) 279.    ... show more

Dutch: omleiding
Polish: objazdówka, objazd