The Inner Ring Road of Berlin (German: Berliner Innenstadtring) ist a route of major roads around the historic center of Berlin encompassing the boroughs Mitte, Pankow and Friedrichshain-Kreuzberg. The ring road is named Inner because of the (incomplete) ring road motorway named the City Ring Road as well as the larger Berlin Orbital.
The ring road runs from Berlin Main Station clockwise along Invalidenstraße, Caroline-Michaelis-Straße, Julie-Wolfthorn-Straße, Bernauer Straße, Eberswalder Straße, Danziger Straße, Petersburger Straße, Warschauer Straße, Am Oberbaum (Oberbaumbrücke), Oberbaumstraße, Skalitzer Straße, Gitschiner Straße, Hallesches Ufer und Reichpietschufer (westbound) / Waterloo-Ufer, Tempelhofer Ufer, Schöneberger Ufer (eastbound) and finally back to the main station via the Tiergarten tunnel.
In the southern and eastern part the route is identical with the historic customs city wall that was begirding the Old Berlin until 1861. The city wall had roads along its length so that after the wall was torn down it opened spaces similar to a boulevard. In the western part there had been the Entlastungsstraße road cut through the Great Tiergarten park to avoid the places around the Brandenburg Gate and the Reichstag by about a mile. In the northern part the route takes advantage of one of the Hobrecht-Plan ring roads which runs considerably more outside of the Old Berlin limits so that there is no historic connection from Invalidenstraße to Bernauer Straße. The open space at Bernauer Straße is a consequence of the Berlin Wall which led to old buildings along the street to be torn down.
Rebuilding the Invalidenstraße into a major road is the only thing left to close the Inner Ring Road. It was supposed to be finished in 2002 when the new main station had opened but it was blocked by court decision. It was left until end of december 2010 that finally all trials were dismissed and the court approved the plan which will rebuild the street into four lanes plus tram rail tracks and bicycle lanes.[1] The senator announced that construction will start in spring of 2011 but one can not expect the new road to open before the mid of 2013.[2]