Iowa winter quick Facts - statewide data
Printable winter quick facts for fiscal year 2012 - includes statewide and individual district data.
Roadway responsibilities
Centerline-miles of roadway (ramps not included)
9,414
Lane-miles of roadway (miles of roadway times the number of lanes)
24,117
Number of bridges
4,072
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
31
Light-duty snow blower attachments for tractors
36
Workforce and facilities
Permanent employees
1,066
Supervisors
53
Garages
109
Salt permanent storage capacity (tons)
226,893
Materials use
Rock salt (tons)
203,163
Liquid salt brine (gallons)
15,476,581
Liquid calcium chloride (gallons)
69,926
Calcium chloride flake (tons)
2,859
Sand (tons)
34,571
Financial
Average annual winter operations budget
$40 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 Data — 20-year average, fiscal years 1991-2010
Average snowfall (inches)
37
Average number of snow events
35
Average winter season precipitation days
54
A precipitation day is any day which .01 inch of liquid precipitation is received.
