Alssundbroen is a shore-access bridge dive north of Sønderborg where the water drops away quickly beside the piers. The route works best as a disciplined out-and-back: short shore access, a controlled turn on the slope, and a conservative return inside the bridge area. Parking is straightforward, but current and traffic make this a site for careful timing rather than a casual splash. Sea trout and other temperate-water fish are a realistic draw around the structure.