Alte Brücke, Stone footbridge in Saarbrücken, Germany.

The Alte Brücke is a stone arch bridge over the Saar in Saarbrücken, 200 m long and 7 m wide, linking St. Johann and Alt-Saarbrücken. It is reserved for pedestrians and cyclists. Of its original 14 arches, several were lost or filled in on the St. Johann side during construction of the finance ministry and the Tbilisser Platz, and one on the Alt-Saarbrücken side during a Saar straightening around 1763. Since 1961–63 a steel walkway extends the bridge over the A 620 motorway.

Built in 1546/49 under Count Philipp II after Emperor Charles V was unable to cross the Saar here for several days because of flooding, it was the first Saar bridge after the Roman bridge upstream fell into ruin in the early Middle Ages. It was destroyed and rebuilt at least twice. On the St. Johann side, the construction of the finance ministry and the Tbilisser Platz filled in or removed several of the original 14 arches; around 1763 a bend in the Saar cost one arch on the Alt-Saarbrücken side. In 1961–63 the bridge was extended by a steel walkway over the A 620 motorway.

The bridge is depicted on three postage stamps: a 10-cent definitive of the Saar region from 1922, a Saarland special stamp for the 1951 Stamp Day, and a 30-pfennig Deutsche Bundespost tourism stamp from 1973. The equestrian statue of Kaiser Wilhelm I, inaugurated on 14 May 1904 before Wilhelm II and Auguste Viktoria, was removed after the war on French orders.

The bridge is reserved for pedestrians and cyclists, so no motor traffic crosses it. It links St. Johann and Alt-Saarbrücken directly beside the Staatstheater, the St. Johanner Markt and the Schloss. On the Alt-Saarbrücken side a steel walkway added in 1961–63 carries the path over the A 620 motorway.

The bridge appears on several stamps: a 10-cent definitive of the Saar region from 1922, a 1951 Saarland stamp for Stamp Day, and a 30-pfennig West German Post special issue of 1973 promoting tourism.