The over 100-year-old Neumühlebrücke bridge in Lauperswil in Emmental shines in new splendor. After months of closure and extensive renovation work, the bridge was partially reopened to the public on November 8, 2024.
Saving a cultural monument
The Neumühle Bridge, built in 1914, was completely closed in November 2023 due to an acute risk of collapse. Initially, complete demolition was under discussion. However, thanks to the commitment of experts such as Edgar Kälin and Prof. Dr. Eugen Brühwiler, the historic bridge was saved[2].
Innovative renovation techniques
The refurbishment involved several steps:
- Removal of the old coating to reduce weight
- Exposure and repair of corroded reinforcement
- Use of Ultra-high-performance fiber-reinforced concrete (UHPC)
- Use of polystyrene concrete for permanent relief
- New road surface made of UHPFRC chippings matrix
Particularly innovative was the use of UHPFRC, which was applied for the first time using a concrete pump via a 60-meter-long hose line.
Reopening and outlook
The bridge has been open to pedestrians again at weekends since November 8, 2024. The remaining work, such as plastering and repairing the abutments, should be completed by mid-December[5].
The successful renovation of the Neumühlebrücke bridge shows how historical structures can be preserved using modern techniques. It is a prime example of sustainable infrastructure renewal in the Emmental.
