Iowa State Route 136 is a east-west highway in Northern Clinton County. It runs from the Jones/Clinton County to the Iowa/Illinois State Line. IA St Rt 136 passes through the following towns in Clinton County. Lost Nation Elwood Delmar Charlotte Goose Lake Clinton
IA St Rt 136 is multi-plexed in Clinton County. U.S. Rt. 67, at Clinton.
IA St Rt 136 intersects the following towns in Clinton County. U.S. Rt. 61, near Delmar. U.S. Rt. 67, at Clinton.