|Bridge “Garibaldi” Island La Maddalena||References_3746|
The new Bridge “Garibaldi” that connects the Island La Maddalena and Island Caprera (Province of Olbia) has been achieved in the work planned for the extraordinary meeting of the G8 in July 2009 based on original Italian presidency, then held in L'Aquila.
The project involves the removal of the bridge temporary Bailey-type and the creation of a new road and pedestrian bridge linking the Island of La Maddalena with Island of Caprera.
The longitudinal profile of the new deck is curved circular shape. The shell geometry characterizes the circular structural pattern of the bridge, so that curved surfaces with a minimum thickness and of variable width, depending on aesthetic requirements, generate a significant spatial variability of the structure. This structural design has been determined in accordance with both functional and aesthetic impact constraints, given also the high quality environment and landscape of the site.
The bridge is developed above the sea along a straight axis with central span 52 m, with a maximum height of about 5.6 m above the water level. The cross section of the bridge is 10 m wide, the space to vehicular traffic is 6 m. On the sides there are two protected pedestrian and cycle paths each of a width 1.8 m.
For the extraordinary time demands given by the construction company the bridge was completed in just 4 months of work.
|Vennes-Chexbres-TP2 - N9 UPlaNS||References_117|
Opened in 1974, the section Vennes-Chexbres of the N09 Swiss motorway is now subject to major maintenance, renewal and improvement works. To overcome the difficulties caused by traffic overload between the Vennes and Belmont junctions, it is planned to transform the existent emergency lane into a lane suitable for transit at peak hours (temporary PUN).
Lombardi Ltd., leader of the joint venture LIG-A, is charged with the project management and most of the tunnel and geotechnical studies for the section TP2 (km 7'610 to 11'800).
This section, located in a highly urbanized area, includes major bridges Chandelar (L ≈ 245 m) and Paudèze (L ≈ 410 m), the Belmont tunnels (L ≈ 400 m), the Vennes junction, 4 overpasses and 3 underpasses. All the works will be performed under traffic of 65’000 vehicles / day with 4 busy lanes during peak hours.
To do this, major civil works including the Belmont tunnels enlargement and the strengthening and enlargement of the two major bridges of the section are necessary. The Belmont tunnels will be enlarged using a rigid portal structure which ensures protection and a separation area between traffic and civil works. The portal, installed all along the tunnel, accommodates two reduced size lanes (2 x 3.50 m) for regular traffic during the enlargement of the vault's tunnel.
This construction method, proposed and adapted for the Belmont tunnel, presents a pioneer in Switzerland and is a significant technical challenge. It is also a great opportunity for various Swiss tunnels that have to be rehabilitated and expanded under traffic in future.
|Extension Northern Bypass Zurich, Lot 1 (covering Weiningen)||References_5869|
The general project envisages a semi-interchange in Weiningen, in the vicinity of residential areas, as well as a 100 m long covering of the western portal area of the existing 1st and 2nd and the new 3rd tube of the Gubrist tunnel. The national road N01 will be enlarged at the project perimeter due to the additional roadway for the new 3rd tube of the Gubrist tunnel.
In the future, 3 lanes will lead towards the Limmattal junction in the new 3rd tube, while 2 lanes will lead towards St. Gallen / Airport in each of the existing 1st and 2nd tube. The new semi-interchange Weiningen, compared to the existing one, has been moved by 200 m towards the Limmattal junction and is characterized by an exit at the level of the national road N01 as well as a geometrically rescaled entrance compared to the detailed design of 2009.
The two existing overpasses “Einfahrtsrampe” and “Klosterweg” will be demolished and reconstructed in a new location. The bypass will be adjusted in the horizontal alignment over a length of about 400 m. The country lanes will be adjusted to the impacts of the project.
|Main inspections of the tunnels Amsteg – Göschenen||References_1555|
On behalf of the Federal Road Office FEDRO, Zofingen branch, in the period 2014-2024 Lombardi carries out the quinquennial main inspections of the tunnels Intschi I, Intschi II, Platti, Langlaui, Ried and Teiftal between Amsteg and Göschenen in the canton of Uri on the north ramp of the Gotthard road tunnel.
The two-tube road tunnels have 2 lanes each and some of them include auxiliary structures. The tunnels have varying lengths from a minimum of 80 meters up to 555 meters. Due to the age of the structures and the various repairs, all the tunnels have different characteristics and damages.
The tunnel inspection aims to capture the actual state of the tunnel via a visual inspection of the structure, to document it accordingly and then to evaluate it.
The key component of the main inspection is the visual inspection of all structural elements, which accompany a description of the structure. The documentation in the report includes the description, analysis and assessment of the current condition of the structure, the preparation of a forecast and a recommendation for action.
|Rubigen - Thun - Spiez Overall Site Supervision||References_1553|
Since its commissioning in early 1970, the motorway section of the N06 between Rubigen – Wimmis and the N08 Lattigen – Spiez has never been extensively restored and reinstated.
The current restoration will meet today’s requirements and regulations regarding noise and water protection as well as operation and maintenance.
- The reinforcement of the emergency lanes and the replacement of the
damaged concrete carriageway,
- The repair of the main drainage network, with discharge into several road
drainage water treatment plants,
- The repair of civil engineering works;
- The repair of the Allmend tunnel by lowering the road,
- The construction of two tunnel control centers,
- Renewal and replacement of electromechanical plants (MEP)
In this project, Lombardi Ltd. is part of the JV OBL RUTS. The works include the external site supervision, the support of the overall project manager in the realization of the project. as well as the responsibility for the overall technical coordination of the construction. Also, the JV is involved in the development of the project manual.
|St. Gotthard Road Pass - N2P||References_272|
The project includes the rehabilitation of the Gotthard pass road. Lombardi Ltd. is responsible for the electromechanical and safety equipment.
The project is divided into three distinct areas:
- Schöllenen (Göschenen to Andermatt)
- Gotthard north (Andermatt to pass height)
- Gotthard south (Pass height to Airolo).
The road stretches comprise both open-sky road segments as well as various tunnels and avalanche protection galleries.
Important rehabilitation works are required in particular for the single-tube tunnel Costoni di Fieud which will be equipped with a safety tunnel.
|Lucerne boundary - Maintenance Project||References_768|
The national highway N02 between Lucerne and Hergiswil was put into operation in 1965. The noise barrier walls and the hard shoulders for the two lanes were realized in 1982. Over the last 25 years, no maintenance or renovation works have been performed. Through the maintenance project, the road section will be adapted to the current standards, guidelines and laws.
The project includes: the improvement of the intertwining situation N08/N02, the repair of the existing equipment in the trace, the supporting walls and civil engineering works as well as the rehabilitation of the noise barriers in order to guarantee the fulfilment of the noise protection regulation.
Throughout the planning phases including the concept of measures and project of intervention, as well as all the phases of implementation up to the commissioning and completion are realized within an engineering consortium. wherein Lombardi AG, is responsible for developing maintenance projects for selected supporting walls.
The works started in 2012; the implementation is expected to be completed at the end of 2021.
The cost of the whole maintenance project will be around 70 Mio. CHF.
Within the framework of the regional traffic concept, the Canton of Uri constructs a new link (west-east link, WOV) to improve the traffic situation and relieve the center of Altdorf and the roundabout Flüelen. FEDRO supports the overall traffic concept pursued by the Canton of Uri and, with the project “Semi-interchange Altdorf”, ensures the connection of the WOV to the national road network.
The planned semi-interchange Altdorf will be constructed at km 144.800-145.600 of the N2 national road and connected to the cantonal roads Industriestrasse and Attinghauserstrasse. The road with of the entrance and exit is 6.00 m (3.50 m carriageway, 2.50 m emergency lane). They are both about 380 m long. The two connecting nodes will be constructed as three- respectively four-way roundabouts (D = 30 m) with concrete pavement.
As part of the new nodes, the existing routes of the slow traffic needs to be adapted and maintained throughout the entire construction period.
The exit also includes the construction of a supporting wall to widen the carriageway in the area of the existing Reuss dam. Within the scope of the project, a road drainage and construction in ecologically very sensitive environment (water protection area) must be planned and executed.