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Iowa winter quick Facts - statewide data


Printable winter quick facts for fiscal year 2016 - includes statewide and individual district data.

Roadway responsibilities

Centerline-miles of roadway (ramps not included)
9,403
Lane-miles of roadway (miles of roadway times the number of lanes)
24,122
Number of bridges
4,109

Equipment

Snow removal trucks
892
Motor graders
53
Front-end loaders
133
Heavy-duty, self-propelled snow blowers
11
Medium-duty snow blower attachments for end loaders or tractors
30
Light-duty snow blower attachments for tractors
52
Tow plows
12

Workforce and facilities

Permanent employees
1,047
Seasonal employees
502
Supervisors
53
Garages
109
Salt permanent storage capacity (tons)
222,454

Materials use

Rock salt (tons)
107,417
Liquid salt brine (gallons)
20,189,526
Liquid calcium chloride (gallons)
32,178
Calcium chloride flake (tons)
1,620
Sand (tons)
17,669

Financial

Average annual winter operations budget
$40 million

Roadway weather information systems

Road weather information systems (RWIS)
*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.
90

Climate Data — 5-year average, fiscal years 2012-2016

Average snowfall (inches)
30
Average number of snow events
32
Average winter season precipitation days
52
A precipitation day is any day which .01 inch of liquid precipitation is received.