Some counties have decided to remove their postings as early as
May 6, 2013 (see the list below).
Some roadway sections are too weak to withstand even the legal load limit (80,000 pounds) during the springtime freezing and thawing period. These highway sections have signs posted indicating the allowable weight limits during the period normally from the second week in March till late April or early May. There are approximately
170 miles (13 segments) of state highways that are posted during the springtime freezing and thawing period. The
13 segments account for less than 2 percent of all state highways.
For information on particular roadway postings, truckers are urged to contact the
Wisconsin Department of Transportation (WisDOT) personnel who represent the county where the roadway is
located as identified on the map and roadway list below.
The WisDOT regional highway
operations offices may exempt vehicles carrying certain commodities
or which are used to perform certain services as specified by WisDOT's
regional highway operations office from
posted road restrictions if such exemptions are reasonable and
necessary to promote the public health, safety, or welfare (such as
for school buses, heating fuel, or milk). Vehicles used to
transport material pumped from a septic or holding tank may be
declared exempt from posted road restrictions by the WisDOT regional
highway operations offices if, because of health concerns, materials
needed to be removed from a septic or holding tank within 24 hours
after the vehicle operator is notified. Within 72 hours after
operating such a vehicle, the operator of the vehicle shall notify
the WisDOT regional highway operations office that the vehicle
traveled over a posted road. (Reference: State Statutes 349.16 (3)
Local county or township road maintenance authorities are
responsible for determining when local and county roads should be
posted for weight limitations. Questions related to weight
restrictions on local or county roads should be referred to the maintaining authority for
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.