The following is a list of county routes in Humboldt County, Iowa. All county roads are maintained by the county in which they reside, and all are marked with standard MUTCD approved county road shields. Humboldt County's routes all follow Iowa's alphanumeric system.
List of current County Routes in Humboldt County, Iowa This list is up to date as of December 2017.
#SurfaceDirection and TerminiMileage (km)Notes CR C12PavedE/WUS 169toIA 17Former Iowa 408 CR C18Paved/GravelE/WPocahontas CR C18toBode CR C20PavedE/WIA 15toIA 17Portions former Iowa 222 CR C23GravelE/WP33toP56 CR C26PavedE/WPocahontas CR C26toWright CR C26 CR C28GravelE/WP66toSmith St., Renwick CR C29Paved/GravelE/WP19toUS 169East portion formerly Iowa 367 CR C30PavedE/WP66toIA 17 CR C44Paved/GravelE/WP19toUS 169Locally Wildcat RoadGravelE/WP56toP66 CR C46Paved/GravelE/WP19toUS 169 CR C48PavedE/WP56toThor CR C49PavedE/WPocahontas CR C49toUS 169 CR C54PavedE/WP66toWright County Line CR P19PavedN/SC49toIA 15 CR P20PavedN/SC26toKossuth CR P20 CR P23Paved/GravelN/SC49toC26, Bradgate CR P29PavedN/SWebster CR P29toIA 3 CR P30PavedN/SC20toKossuth CR P30 CR P33Paved/GravelN/SWebster County linetoC20, Bode CR P56Paved/GravelN/SWebster County linetoC12Colloquially "County K" CR P57GravelN/SIA 3toC20 CR P59PavedN/SWebster CR 59toC48 CR P60PavedN/SC20toC12, Lu Verne CR P63Paved/GravelN/SWebster CR toC26 CR P66PavedN/SC48, ThortoC12 CR P76GravelN/SIA 17, RenwicktoC12
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