The Bundesstraße 16 or B 16 is one of the German federal highways crossing southern Bavaria from east to south. It runs from the Bavarian Forest to Regensburg and then along the river Danube to Günzburg. From Roding to Regensburg the highway is developed without any junctions and is in parts signed as B 16n. From Günzburg to Füssen the B 16 runs from north to south.

Towns passed by the B 3

Roding - Nittenau - Regensburg - Kelheim - Abensberg - Neustadt an der Donau - Vohburg - Ingolstadt - Neuburg a.d.Donau - Rain - Donauwörth - Höchstädt - Dillingen a.d.Donau - Lauingen - Gundelfingen - Günzburg - Ichenhausen - Krumbach - Mindelheim - Kaufbeuren - Marktoberdorf - Füssen

New B 16

There are attempts to develop this Bundesstraße without running through towns, and many bypasses have been built. There are main through-roads only between Lauingen and Donauwörth. Several bypasses are in planning: