Wyoming Frost Laws & Spring Thaw Limits

How Wyoming handles spring thaw

Wyoming posts seasonal weight restrictions by segment, usually in March and April as frost leaves the ground. WYDOT commonly cuts roughly 25% to 35% on a weak segment, so a normal 80,000 lb route can fall toward 60,000 lb, but the number varies segment to segment. Segments post or lift with no notice. Pull the live limit at wyoroad.info and at the Port of Entry before every move.

Window, reduction, and where to check

• Season: Spring thaw restrictions typically hit in March and April, though exact dates ride on ground temperature and moisture and change every year. WYDOT can add, change, or lift a segment with no advance notice.
• Reduction: Cuts are set per segment, commonly on the order of 25% to 35% off the normal limit. An 80,000 lb route can drop toward 60,000 or even 52,000 lb. The limits are not uniform, so read the number for your exact segment.
• Interstates: Exempt from the seasonal reduction
• Find the current order: WYDOT posts active size and weight restrictions on the WYDOT 511 page at wyoroad.info/highway/restrictions.html and at Ports of Entry. Verify the per-segment limit before every move on a listed route.
• Overweight penalty: Standard Wyoming overweight penalty under the state size-and-weight schedule (W.S. 31-18-801 et seq.), assessed on the pounds over the posted seasonal limit.

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