National road 52 Tuv-Venås and Storeskar - Galdane

Description du marché

National road 52 is the mountain pass between Østlandet and Western Norway with the highest share of heavy transport. The aim of all the measures on National Road 52 is to improve accessibility, traffic safety and operational conditions, especially in winter. Tuv-Venås: On the stretch between Tuv and Venås, the current road has a steep climb of 8.2-9.1 % in Støytebakken. This means that heavy vehicles get stuck in winter, which in turn causes blocking back, reduced accessibility and traffic hazardous situations. The current chain site is undersized and not built in accordance with the current requirements. There are no offers on the stretch for soft road users. Riksvegen shall therefore be improved to an H1 road, with a special focus on better vertical curvature, a parallel foot and cycle path shall be established and the chain place shall be moved and built according to requirements in the current hand books. The speed limit is set at 60 km/h up to Venås bridge. Walls and access screens shall be constructed. New sub-drains shall be established through national road 52, and old sub-drains shall be removed. Today Storeskar bridge has registered damage, and is after the new Skjøiten bridge was built, the weakest point on national road 52. The bridge ́s adjoining road currently has a crease S-curve that does not meet the current normal requirements. New Storeskar bridge is included in the contract work and adjoining road geometry shall be improved to H1 standard. The speed limit is set at 80 km/h. The Norwegian Public Roads Administration has, as a part of its engineering design, carried out a detailed engineering design services for the bridge and has carried out technical approval of this. Detailed engineering design services and technical certification will be made available for the contractor in chapter F and it can be used by the tenderer. If such use, the tenderer makes the material theirs and will be responsible for any further use of this. There are high rock cuttings in the project that shall be blasted, and securing rock shall be Performed. Blasting works have previously been carried out in the rock cuttings, and the remaining undetoned explosives must be expected. Gamle Storeskar bridge is demolished and removed after the new Storeskar bridge is trafficked.

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