Montana Department of Transportation

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Traffic Data - Traffic AADT Maps

If you are working on or contracted to do an MDT project, do not use traffic data from this map. Please continue sending your formal traffic data requests via .

Welcome to MDT's Interactive Traffic map!

Please utilize this map if you are looking for Annual Average Daily Traffic (AADT).

If you experience technical difficulties with the online statewide traffic map please use the "View Larger Map" link below.

View larger map or use on mobile device

We hope you find our traffic map useful and informative.

There are multiple layers of information being displayed on the map therefore you must zoom in to see detail such as the traffic count location sites. Once zoomed in, the map displays a point and a line layer containing AADT’s collected at those points and the line segments referenced to those collection points.

Click on the features in the map to display details. The pop-up box displays data in multiple slides – scroll through the slides using the arrow at the top of the box.

   Read more about the attributes found in the traffic map.

If you would like to view more detailed traffic data, please visit our traffic count database system (TCDS).

   Learn how to navigate TCDS.

Traffic Flow Map

This is a map showing rural traffic flow in Montana. Annual Average Daily Traffic (AADT) and Commercial Annual Average Daily Traffic (CAADT) have been weighted based on established major traffic breaks. The map is intended to give users a general idea of the traffic flow in Montana.

ATR and WIM Map

View larger map or use on mobile device

The ATR and WIM map is an interactive map that displays only the permanent sites. Click on any of the features in the map to show their details.

Disclaimer: This data set is provided "as-is" without warranty of any kind. The Montana Department of Transportation makes no representations or warranties whatsoever with respect to the accuracy or completeness of this data set and assumes no responsibility for the suitability of this data set for a particular purpose; and MDT will not be liable for any damages incurred as a result of errors in this data set.