Why are MnDOT’s construction detours so long?
MnDOT must be attentive to where detours are sent to make sure the road has capacity to handle the additional traffic, so we do not detour traffic from a busy arterial road onto a quiet residential street. In general, we try to officially detour traffic onto a similar type of road that can add significantly to the length of the detour. For freeway traffic, we try to keep traffic on a freeway.
MnDOT posts official detours onto roadways that have capacity to handle the increased traffic.
A corollary to this rule, too, is that public agencies try hard to keep detours on “their own” roads. When forced to detour traffic onto another jurisdiction’s roads, agencies like MnDOT will compensate counties and cities for the added wear.
Road closure and detour information can be found online for highway construction projects as the work progresses at http://www.511mn.org/. The public also can access email alerts, MnDOT’s Twitter account and videos for updates at www.mndot.gov. The sign-up is in the middle of the page near the bottom.