Fylkesvei
Norwegian county road 408 (Fylkesvei 408 or Fv408) is a long Norwegian county road which runs between the villages of Blakstad in Froland municipality and Rykene in Arendal municipality. The road roughly follows the river Nidelva the whole way. Prior to 2010, this was a Norwegian national road, but in the transportation reforms that year, the road was transferred to county control.