The Bern City Council has approved an additional credit of 875,000 Swiss francs for the comprehensive renovation of the Seftausteg foot and cycle bridge. This decision, made on Thursday, addresses unforeseen complexities and rising costs that have pushed the total project expenditure to 2.8 million francs. The bridge, a vital link between Bern and Bremgarten, requires significant structural work and upgrades.
Key Takeaways
- Bern City Council approved 875,000 CHF additional funds for Seftausteg.
- Total renovation costs now stand at 2.8 million CHF.
- Bridge connects Bern and Bremgarten, serves pedestrians and cyclists.
- Unexpected structural issues and a single bid led to increased expenses.
- Construction is set to begin in January, with an eight-month closure period.
Rising Costs and Unforeseen Challenges
The initial budget for the Seftausteg renovation proved insufficient. Several factors contributed to this increase, primarily the need for additional structural measures. The 53-meter-long bridge, which spans the Aare river, showed signs of deterioration during inspections.
These inspections highlighted the necessity to renew the corrosion protection on the bridge's foot and cycle paths. Furthermore, parts of the bridge's existing structure require replacement. The old wooden decking and the wire mesh fencing of the railing also need to be upgraded.
Project Facts
- Original Budget Shortfall: 875,000 CHF
- Total Project Cost: 2.8 million CHF
- Bern's Share: 1.88 million CHF
- Bridge Length: 53 meters
- Closure Duration: 8 months
Complications with Utility Lines
A significant portion of the added costs stems from challenges related to the utility lines located beneath the bridge. The original plan involved renewing and optimizing the arrangement of these lines. Engineers initially proposed temporarily suspending the utility lines in an enclosure under the bridge during construction.
However, in August, detailed static calculations revealed a critical issue. The bridge structure could not support the additional load of these temporary enclosures. This discovery necessitated a complete change in strategy.
"The deep static calculations showed in August that the bridge could not carry this load," stated the Bern City Council in August.
New Solution: Temporary Utility Bridge
Instead of suspending the lines, a new solution was devised: building a separate, temporary bridge specifically for the utility lines over the Aare. This temporary structure will accommodate the pipes and cables while work proceeds on the main Seftausteg.
This provisional bridge alone accounts for approximately 300,000 francs in additional expenses. It represents a substantial increase over the initial planning.
Background: Seftausteg Significance
The Seftausteg is more than just a crossing; it is a vital pedestrian and cycling artery connecting the city of Bern with the municipality of Bremgarten. Its closure will impact daily commuters and recreational users. The bridge's renovation ensures its long-term safety and functionality for thousands of residents.
Procurement and Funding Details
Another factor contributing to the budget increase was the procurement process for the main construction work. Only one bid was submitted for the primary renovation tasks. This single offer significantly exceeded the allocated budget, further escalating the total project cost.
The overall cost for the Seftausteg renovation now stands at 2.8 million francs. The city of Bern will bear 1.88 million francs of this total. This amount includes additional expenses for drainage systems and public art installations integrated into the project.
- Corrosion protection renewal: Essential for structural integrity.
- Bridge construction replacement: Key structural elements will be updated.
- Wood decking and railing upgrade: Enhances safety and aesthetics.
- Utility line optimization: Modernizing infrastructure beneath the bridge.
Construction Timeline and Traffic Diversions
Construction is scheduled to commence in January. The project is expected to last for eight months. During this entire period, the Seftausteg will be completely closed to the public.
Pedestrian and bicycle traffic will be redirected. Users will need to use the Felsenaubrücke as an alternative route. This diversion is crucial for ensuring public safety during the renovation work.
The Bremgarten municipal assembly had already approved its share of the additional credit. This ensures that the funding is in place for the project to move forward as planned.
The renovation is a critical investment in Bern's infrastructure, aiming to enhance safety and extend the lifespan of this important cross-river connection for many years to come.