Bremen's Wilhelm-Kaisen Bridge reopens early after major structural upgrades
Despite adverse weather conditions at the start of the year, renovation work inside Bremen's Wilhelm-Kaisen Bridge has now been completed ahead of schedule. Construction began on August 18, 2025, on the Weser crossing between Domsheide and Franziuseck, with completion originally planned by Easter 2026—yet final inspections have already taken place.
To reinforce the bridge, tensioning cables were installed inside its hollow box girders and anchored at 16 newly constructed anchor blocks. This post-tensioning system allows the cables to be tightened, increasing the bridge's load-bearing capacity. The measure was essential because the prestressed concrete structure, built in 1961, was constructed from both riverbanks toward the center. Over time, rising traffic loads had placed excessive stress on the midspan—where the two bridge sections meet—requiring structural reinforcement.
Unlike the four-month emergency repairs on the Bürgermeister-Smidt Bridge, which wrapped up in spring 2025 and required a full closure, traffic restrictions on the Wilhelm-Kaisen Bridge were far less disruptive. As of mid-April, the general weight limit has been lifted, the ban on public transport vehicles passing or meeting on the bridge has been rescinded, and tram service frequency can return to normal. However, the speed limit remains 30 km/h (19 mph) for all traffic, and the slow lane still prohibits vehicles over 3.5 metric tons from overtaking in the direction of Neustadt.
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