Minnesota Department of Transportation

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April 14, 2023

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MnDOT conducts aerial photography on Highways 34 and 71 in Park Rapids, Highway 11 near Warroad and Highway 75 near Hallock

Residents asked not to disturb temporary targets

Bemidji, Minn. – The Minnesota Department of Transportation is asking residents not to disturb aerial photography targets as crews begin aerial mapping in northwestern Minnesota. Landowners in the area that will have targets placed on or near their property will be contacted directly. Weather permitting, work will begin mid-April and conclude in late May. The mapping will take place in the following locations:

  • Highway 11- Warroad to Roosevelt
  • Highways 34 and 71 – Park Rapids
  • Highway 175- Hallock

The aerial survey process relies on clear observations, and must be conducted after the spring melt and before the trees leaf out. To begin the process crews place an “X” on the ground as a reference point for the aerial photographer.
aerial photography targets

Aerial mapping is used to create a record of existing infrastructure and landscape along MnDOT right of way for transportation planning and highway design. In order to obtain accurate aerial mapping, MnDOT crews paint large white “X” targets on paved surfaces, and place plastic or fabric “X” targets on unpaved surfaces.

A survey crew then records the coordinate position and elevation of the temporary targets for the aerial photography company. The plastic and fabric targets are temporary and will be removed when the photography is completed.

There will also be Drone Lidar flights conducted on TH11 from Indus to Loman and Highway 175 at Bridge 35006 in Hallock. We ask that the public DO NOT disturb drone pilots when flight missions are being conducted. Targets are not required with this flight method.

MnDOT requests that landowners not remove or disturb the targets, if possible, until the photography is completed. If a target must be moved, please contact the District 2 survey office at 218-755-6509 or by email at drew.mistic@state.mn.us