Spring thaw will end in Zones 3, 4, and 5 at 12:01
AM on Thurdsay, May 9, 2013. Spring thaw is still in effect in Zones
1 and 2.
From December 1 to May 1 every year, state highways in Wisconsin must withstand an extreme range of moisture and temperature conditions from -30
degrees fahrenheit to +70 degrees fahrenheit. These varying conditions
affect the structural strength of the pavements and the base materials under the roadway.
There are three distinct programs that take advantage of the frozen pavement and
sub-base conditions during the winter months and also protect pavement's weak conditions during the springtime freezing and thawing
period. How do we determine when
it's frozen or thawing?
All three of these programs apply only to the state highway system. Local county or township road maintenance authorities are responsible for determining when their roads are either frozen or thawing and whether sections should be posted for weight limitations. Questions related to weight restrictions on local or county roads should be referred to the maintaining authority for those roads.
Regional transportation offices can be contacted to answer specific questions related to the state highway system in their region.
Important things to know with respect to permits involving 98,000 pounds on 6-axles:
The Wisconsin Department of Transportation (WisDOT) is the
only agency that may issue a “Raw Forest Products Permit” (RS
Permit) per Wis Statute 348.27(9m)(a)4.
The RS Permit authorizes transport of “raw forest products” at
gvw of 98,000 lbs on vehicles or vehicle combinations with six or
more axles none of which may exceed the axle weights set in the
RS Permits are not valid on Interstate highways.
RS permits do not authorize exceeding posted weight limits,
except for seasonal limits on marked State or US routes in
connection with thawing of frozen roads.
During the spring thaw period established by WisDOT, the RS
Permit allows transport on any highway that is marked State or US
route including those posted to limit weights seasonally in
connection with thawing of frozen roads. RS permits also remain
valid during spring thaw on all other public roads but are subject
to all posted weight limits, including seasonal limits.
Call (608) 266-8417 for a recorded message of the current status
of the roads weight restrictions.
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The Wisconsin Department of Transportation does not testify to, sponsor or endorse the accuracy of the information provided on externally linked pages.
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