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.

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.

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.

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.