North Dakota Frost Laws, Seasonal Load Weight and Speed Restrictions – 2019

NDDOT's procedure for initiation of spring load restrictions on the State Highway System is based on the following factors: The state:

Uses load restrictions to reduce damage to roadways caused by heavy loads at a time of year when highway pavements are most vulnerable.

Sets load restrictions as weather and roadbed conditions require and removes these restrictions when roadbeds are stable enough to carry legal weight traffic without damage based on the following sources of information: temperature probes in the base layers of pavement sections, long range temperature forecasts, and a Falling Weight Deflectometer (FWD) that measures the strength of roadway bases and the asphalt pavement surface.

NDDOT Load Restriction Info (best source):
On the page, under Related links, click on Current Load Restrictions Map.

Using the map, determine the color of route of interest and refer to the table on the previous page for axle weight limits (see below).

North Dakota Load Restriction Chart (2018)

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