a different or less direct route to a place that is used to avoid a problem or to visit somewhere or do something on the way

You'd be wise to make a detour to avoid the roadworks. 绕开道路施工地点是明智之举。

a different route that is used because a road is closed

Traffic detours will be kept to a minimum throughout the festival. 在节日期间，尽量不实行交通绕行措施。