- Data only includes miles travelled on county roads. It does not include miles travelled on city, state or federal roads and highways.
- Lack of a visible bar can occur when the number is so small the result is a bar less than one pixel in height.
| Data for the Clay County Road Miles Chart |
|---|
| Calendar Year | Number of All Vehicle Miles | Change from Prior Year | Number of Truck Miles | Change from Prior Year |
|---|
| 2005 | 28,181.968 | N/A | 0.373 | N/A |
| 2006 | 28,323.748 | 0.5% | 4.909 | 1,216.1% |
| 2007 | 28,302.741 | -0.1% | 4.909 | 0.0% |
| 2008 | 28,283.539 | -0.1% | 4.909 | 0.0% |
| 2009 | 28,283.297 | 0.0% | 4.910 | 0.0% |
| 2010 | 20,953.590 | -25.9% | 670.515 | 13,557.2% |
| 2011 | 20,931.960 | -0.1% | 669.823 | -0.1% |
| 2012 | 20,931.960 | 0.0% | 669.823 | 0.0% |
| 2013 | 20,955.680 | 0.1% | 670.582 | 0.1% |
| 2014 | 21,104.690 | 0.7% | 675.350 | 0.7% |
| 2015 | 20,923.573 | -0.9% | 669.554 | -0.9% |
| 2016 | 20,923.573 | 0.0% | 669.554 | 0.0% |
| 2017 | 20,922.116 | 0.0% | 374.563 | -44.1% |
| 2018 | 72,918.896 | 248.5% | 2,209.044 | 489.8% |
| 2019 | 72,927.826 | 0.0% | 2,209.326 | 0.0% |
| 2020 | 22,628.268 | -69.0% | 664.956 | -69.9% |
| 2021 | 22,628.801 | 0.0% | 664.976 | 0.0% |
| 2022 | 22,892.063 | 1.2% | 438.308 | -34.1% |