Until the changing of Luisenplatz (Luis Square) in Darmstadt into pedestrian zone in the 1970s, the B26 road ran through center Darmstadt. In Darmstadt the B26 meets the North-South Highway of Bundesstraße 3, B3. Today, the B26 pass under the Darmstadt city center.
North eastern bypass Darmstadt
As a replacement for the crossing of the Darmstadt city center, a north eastern bypass is planned. It should relieve the downtown area from car and truck traffic. The planned route was to connect the Darmstadt Ostbahnhof and the Martin-Luther-King-ring. Half of this new road will run in a tunnel.
Near Schonungen the B26 crosses the Bundesstraße 303. Near Bergrheinfeld the B26 cross the A70. Near Gemünden am Main the B26 crosses the Bundesautobahn 7. In the town of Karlstadt am Main the B26 cross the Bundesstraße 27. In Aschaffenburg the B26 cross the Bundesautobahn 3. In Dieburg the B26 crosses the Bundesstraße 45.
The 'Luisenplatz', main square of Darmstadt. B26 now travels under the plaza, with exits to underground parking.