Iowa winter quick fFacts - statewide data
Roadway responsibilities
Centerline-miles of roadway (ramps not included)
9,393
Lane-miles of roadway (miles of roadway times the number of lanes)
24,867
Number of bridges
4,054
Equipment
Snow removal trucks
901
Motor graders
53
Front-end loaders
134
Heavy-duty, self-propelled snow blowers
11
Medium-duty snow blower attachments for end loaders or tractors
56
Workforce and facilities
Permanent employees
1,204
Supervisors
54
Garages
110
Salt permanent storage capacity (tons)
203,617
Materials use
Rock salt (tons)
219,974
Liquid salt brine (gallons)
12,777,515
Liquid calcium chloride (gallons)
89,956
Calcium chloride flake (tons)
1,737
Sand (tons)
26,095
Financial
Average annual winter operations budget
$38 million
Roadway weather information systems
Road weather information systems (RWIS)
62
RWIS sites are full-service weather stations along the roadside that provide atmospheric and pavement specific weather information, such as the temperature of the pavement surface.
Climate dData — 19-year average, fiscal years 1991-2009
Average snowfall (inches)
30.5
Average number of snow events
23.4
Average winter season precipitation days
50.2
A precipitation day is any day which .01 inch of liquid precipitation is received.
