340th Avenue in Clay County, Iowa

340th Avenue in Clay County is a secondary road (also known as County Highway N18). It runs in a southeast-northwest direction starting from 330th Avenue and crosses 335th Avenue. 340th Avenue is also known as County Highway N18. 340th Avenue also exists in Dubuque County, Palo Alto County, Pocahontas County, Lucas County and Dickinson County.
Alternate Name
County Highway N18
Road Type
secondary road
Route
southeast-northwest