- Work: Rehabilitation of BW-IS artificial structures under traffic
- Client: FEDRO, Federal Roads Office
- Site manager: Giuliano Mafrici
- Foreman: Alessandro Salemi
- Construction period: 2015 - 2018
- Construction costs: 28 million
The section has a total length of approx. 1.55 km and is single-lane with two-way traffic. The section consists of several engineering structures: 3 galleries, Meggeri (521 m), Kapf (47 m) and Schallbett (634 m), 2 tunnels, Kapf 1 (34 m) and Kapf 2 (78 m), as well as 3 bridges, Meggeri bridge (82 m), Meggeri viaduct (20 m) and Schallbett viaduct (124 m) and several retaining walls and smaller structures.On the one hand, the structural measures are aimed at ensuring that the tunnel, galleries, bridges and retaining walls conform to standards. In addition, the durability and serviceability of the structure is to be increased by means of repair measures.
Project description:
Project measures in the area of the tunnels
- Underpinning of the vault inside the tunnels
- Renewal of the verges
- Installation of a drainage separation system with separate drainage of roadway water and mountain water
- Construction of a new roadway drainage system (slotted channels, siphon shafts)
- Structural safety measures (extinguishing water system)
- Pavement renewal
- Repair and painting of vaults
Measures project in the area of the galleries
- Concrete repairs to the gallery wall on the uphill side
- Increasing the iron cover by means of unreinforced pre-concrete
- Surface protection in the splash water and spray mist area
- Increasing impact safety by renewing the guide walls
- Pre-concreting (reinforcement) and repair of the gallery supports
- Replacement of the prestressed anchors
- Renewal of the verges
- Installation of a drainage separation system with separate drainage of dirty water and mountain water
- Creation of a new roadway drainage system (slotted channels, siphon shafts)
- Structural safety measures (SOS niches, extinguishing water systems)
- Renewal of the roof parapets galleries
- Renewal/improvement of gallery roof drainage
- Increasing the punching shear resistance in the area of the gallery supports
- Renewal of surfacing
Project measures in the area of the bridges and viaducts
- Concrete repair
- Replacement of bracket heads
- Wall panels to underpin the existing beams
- Force-fit connection of the roadway slabs
- Surface protection in the splash water and spray mist area
- Installation of a drainage separation system with separate drainage of dirty water and mountain water
- Construction of a new roadway drainage system
- Structural safety measures (extinguishing water system)
- Pavement renewal
Project measures in the area of the retaining walls
- Concrete repair
- Surface protection in the splash water and spray mist area
- Replacement of the prestressed anchors
- Installation of a drainage separation system with separate drainage of waste water and mountain water
- Road construction and resurfacing
