Oberbaumbrücke

The Oberbaum Bridge (German: Oberbaumbrücke) is a double-deck bridge crossing Berlin's River Spree, considered one of the city's landmarks. It links Friedrichshain and Kreuzberg, former boroughs that were divided by the Berlin Wall, and has become an important symbol of Berlin’s unity.

The lower deck of the bridge carries a roadway, which connects Oberbaum Straße to the south of the river with Warschauer Straße to the north. The upper deck of the bridge carries Berlin U-Bahn line U1, between Schlesisches Tor and Warschauer Straße stations.

The bridge appears prominently in the 1998 film Run Lola Run.

The bridge is built on the former boundary of the municipal area with its rural environs, where an excise wall was built in 1732. A wooden drawbridge was built as part of the wall; it served as a gate to the city. The name Oberbaumbrücke stemmed from the heavy tree trunk, covered in metal spikes, that was used as a boom to block the river at night to prevent smuggling. (Baum means tree or wooden beam in German; thus the name means something like "Upper [Upstream] Tree Bridge"; there was another tree-trunk barrier at the western end of the contemporary city limits, close to today's Unterbaumstraße (lit. in English: Lower [Downstream] Tree Street.)

By 1879 the wooden bridge had been modified greatly. At 154 meters it was Berlin's longest, but was no longer adequate to the amount of traffic crossing it. Plans began to be drawn up for a new stone construction. The Siemens & Halske company, which was planning to build the Berlin U-Bahn (subway), insisted on a combined crossing for road vehicles, pedestrians, and the new rail line. The new bridge opened in 1896 after two years of construction, in time for the Berlin Trades Exhibition. The architect and government official Otto Stahn (1859-1930) designed it in North German Brick Gothic, in the style of a city gate with many decorative elements, such as pointed arches, cross vaults, and coats of arms. The two towers were inspired by the Middle Gate Tower (Mitteltorturm) in the northern Brandenburg city of Prenzlau. Although purely cosmetic, they served as a reminder that the site was once Berlin’s river gateway.

...
Wikipedia