- Client: Canton of Valais, DMTE – Mobility Office
- Construction Management: DMTE – SDM, District 2: Central Valais
- Construction Manager: Theo Schmid
- Foreman: Nazmi Bajrami
- Construction period: October 2025 (night work in phases)
- Construction costs: CHF 0.30 million
Technical Data:
- Milling of the ring road / access and exit ramps: 2,611 m²
- Milling of sidewalks: 512 m²
- Bonding agent: 3,123 m²
- AC 8 N: 39 metric tons
- AC T 11 N: 6.5 t
- AC MR 11 PmB 45/80-65: 319 metric tons
- Waterproofing repairs: 31.2 m²
- IGAS joint tape 40 x 10 mm: 400 m
- Resa-Flex elastomeric joint: 344 m
Project Description:
As part of the “T9 – Rossfeld Roundabout, Waterproofing and Paving Rehabilitation” project, the Rossfeld roundabout, along with the adjacent entry and exit ramps and sidewalk areas, were repaired. VOWEG carried out extensive milling, cleaning, waterproofing, and paving work. The existing surface was finely milled and prepared; localized areas of damage to the waterproofing were opened down to the subgrade and rebuilt using a polymer-modified bitumen waterproofing system.
The new surface course was laid on the roundabout ring and on the entry and exit ramps using AC MR 11 PmB 45/80-65. In addition, the sidewalks, bituminous transition strips, and elastomeric joints on the inner and outer rings were replaced. In total, approximately 3,123 m² of pavement surface was milled and approximately 364 metric tons of asphalt mix were laid.
Requirements:
The project’s particular complexity stemmed from its location at a heavily trafficked intersection on the T9. The main paving work was carried out at night between 8:00 p.m. and 4:00 a.m. while the road was completely closed to traffic. This placed high demands on traffic management, signage, lighting, asphalt logistics, and the timely reopening of the roundabout. The tight circular geometry and the numerous edge connections also posed significant challenges. The 1.20 m wide, sloped, drivable inner ring was installed simultaneously by machine and by hand without a longitudinal joint. The many inlets, curbs, and connections required extremely precise execution and coordination.
