The Intercity-Express (ICE) route from Frankfurt to Würzburg crosses the Spessart west to east from Aschaffenburg to Lohr. This route is also known as the Main-Spessart-Bahn. There has been recent modernization on this route, with the old Spessart ramp and the Schwarzkopf Tunnel being replaced with a series of new tunnels between Laufach and Heigenbrücken. The ICE route from Fulda to Würzburg runs down the Sinn valley and joins the Frankfurt track south of Gemünden. A lesser train route (Maintalbahn) follows the Main river from Aschaffenburg to Wertheim via Miltenberg.