The International Transport Forum assessed strategic plans and policy measures on investment and maintenance for German transport infrastructure. See the results here:
www.internationaltransportforum.org/statistics
The “Bundesverkehrswegeplan” (Federal Master Plan for Traffic Infrastructure) is Germany’s central planning instrument for the development and maintenance of road, rail and waterway infrastructures. The current update is from 2016. Read it here (German language only):
Transport financing, including user-fees, tolls and financial management methods, as well as public-private-partnerships for transport infrastructures are arranged and managed by the federally owned VIFG (Germany’s transport infrastructure financing company), recently joined . Find out more at