Where are the roughest state highways in Colorado?

Colorado DOT's 2018 pavement survey puts 20.0% of its 11,345 state highway miles in the LOW drivability-life class, with the share highest in Lincoln County (46.4%), Morgan (42.3%) and Jackson (40.1%); this is one state, not a national figure.

Colorado counties with the largest share of state highway miles in the LOW drivability-life class (counties with 100 or more state highway miles, CDOT 2018; one state only)

What it shows: Lincoln is the largest at 46.4%, followed by Morgan at 42.3%; the smallest shown is Moffat at 30.5%.

Source: Colorado DOT, Highway Quality in Colorado 2018 (data.colorado.gov skxn-j975), cond field (drivability life class) · data from 2018

Data and chart by CalcScrape: Flat Tire Repair