Annual Survey of State Winter Maintenance Data

In 2020 Clear Roads continued a multi-year project to systematically gather, compile and analyze a range of data from state DOTs related to their winter operations.

All state DOTs were invited to participate in a survey to collect information about their winter resources, materials and costs for the winter season from July 1, 2019 to June 30, 2020. This complements data previously collected from the past five winter seasons (2014-2015 through 2018-2019). The results of this survey are linked below.

Clear Roads plans to continue conducting this survey in the future, compiling multiple seasons of data. Survey results for upcoming winters will be added to this page once each year’s data analysis is completed.

This project was featured in an article in the September 2016 issue of Roads & Bridges magazine.

Current-Year Data

2019-2020 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated December 29, 2020

Thirty-six states responded to this survey. The following information can be found on the tabs of this spreadsheet:

Tab 1. Interactive Map. On this tab users may graphically display one or two survey metrics on a map of the United States using interactive boxes.

Tab 2. Collected Data. This tab compiles all survey data from this year and previous years.

Tab 3. Calculated Statistics. This tab includes additional derived statistics from this year’s and previous years’ data sets (such as the ratio of full-time workers to part-time workers and the total dry chemicals applied per lane mile).

Tab 4. Average Values. This tab presents running averages across the most recent five years of the survey.

Tab 5. Changes in Value. This tab presents increases or decreases across the most recent two years of the survey.

Tab 6. Reference – Winter Weather. To provide additional context for the data provided by state DOTs in this survey, this tab includes maps developed through Clear Roads research that show average annual winter weather and severity for the decade of 2000 to 2010.

Tab 7. User-Generated Map. This tab allows users to display custom data on a map of the United States by pasting it into a table of states.

Previous Years’ Data

2018-2019 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated July 15, 2020

2017-2018 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated April 4, 2019

2016-2017 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated February 2, 2018

2015-2016 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated December 21, 2016

2014-2015 State Winter Maintenance Data and Statistics
Microsoft Excel file (xlsx), updated May 31, 2016