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Iowa DOT maintenance garages and roadways within their service areas


Occasionally, winter weather in Iowa is so severe that it becomes unsafe for snowplow operators to be on the roadway; or the combination of high winds and heavy snowfall makes it impossible for snowplows to achieve any measurable progress in preventing roadways from becoming impassable. In these instances, snowplow trucks are recalled from the roadways and returned to their garage. Operators will resume service just as quickly as weather conditions permit.

When the Iowa Department of Transportation (DOT) is not maintaining certain roads during a winter storm, it is unsafe for motorists to attempt to use them. It is highly likely the roads are already or will soon become impassable. Because of the public safety risk during these emergency situations, the affected roads are deemed closed/impassable and the public is notified as quickly as possible. Public notification is provided on www.511ia.org, through the 511 phone service, via issuance of a news release, and as a Twitter post. In addition, the Iowa State Patrol issues an electronic bulletin to the respective 911 centers, so agencies responding to emergencies are not dispatched on closed/impassable roads.

Service area map

Basemeap of the Areas of Responsibility Roads

If a garage(s) has suspended plowing operations, the Iowa DOT will inform the public which maintenance garage(s) has recalled its plows, when it resumes services, and which roads are considered to be closed/impassable in that area. The color-coded map available on this Web page pinpoints the locations of the Iowa DOT's 109 maintenance garages and identifies the highways each garage is responsible for maintaining. This map is intended to assist the public to quickly pinpoint garage locations and roadways affected when snowplow trucks are recalled.


To view using Google Earth

You will need Google Earth installed on your computer to access this information.

  • If you don't already have Google Earth, download it for free (14.3 MB) and install it.
  • Click on service area map (kmz 2.24 MB). Choose save to save the file to your computer's hard drive. Once the file has been saved to your computer, a dialog box will appear. Then click open.
  • To view road/highway names, check the roads box under the layers menu.
Put safety first – Don't risk it. If road conditions are poor, postpone your travel until they improve. Monitor weather and road conditions – for the latest road conditions, visit www.511ia.org or call 511 (in state) or 800-288-1047 (outside of Iowa).