- 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 Howard County Road Miles Chart |
|---|
| Calendar Year | Number of All Vehicle Miles | Change from Prior Year | Number of Truck Miles | Change from Prior Year |
|---|
| 2005 | 68,623.396 | N/A | 0.000 | N/A |
| 2006 | 68,874.892 | 0.4% | 6.184 | N/A |
| 2007 | 68,778.277 | -0.1% | 6.184 | 0.0% |
| 2008 | 68,634.560 | -0.2% | 6.287 | 1.7% |
| 2009 | 68,593.353 | -0.1% | 6.289 | 0.0% |
| 2010 | 45,350.670 | -33.9% | 1,451.221 | 22,976.9% |
| 2011 | 45,350.270 | 0.0% | 1,451.209 | 0.0% |
| 2012 | 45,348.850 | 0.0% | 1,451.163 | 0.0% |
| 2013 | 45,348.850 | 0.0% | 1,451.163 | 0.0% |
| 2014 | 45,348.850 | 0.0% | 1,451.163 | 0.0% |
| 2015 | 68,050.945 | 50.1% | 2,177.630 | 50.1% |
| 2016 | 68,361.802 | 0.5% | 2,187.578 | 0.5% |
| 2017 | 63,910.283 | -6.5% | 1,944.464 | -11.1% |
| 2018 | 86,635.531 | 35.6% | 2,906.598 | 49.5% |
| 2019 | 90,418.016 | 4.4% | 3,028.917 | 4.2% |
| 2020 | 92,927.245 | 2.8% | 3,235.670 | 6.8% |
| 2021 | 93,133.629 | 0.2% | 3,337.696 | 3.2% |
| 2022 | 93,086.040 | -0.1% | 2,986.842 | -10.5% |
| 2023 | 88,562.369 | -4.9% | 3,005.704 | 0.6% |