The viaduct we took care of, It is located in the communication route leading to the Cement Plant at 2 Cementowa Street in Cracow. Two railway tracks run under the viaduct. The viaduct is located diagonally in relation to the obstacle (railway tracks). Our task was to assess the technical condition of the structure and viaduct equipment, determination of the load class and development of recommendations regarding the scope of necessary repairs and reinforcements.

The analyzed object is a three-span viaduct with a theoretical span of 10.30 + 13.65 + 10.40 m. The load-bearing structure is a reinforced concrete slab with variable height, supported on external supports (reinforced concrete blocks to the bearing) and internal supports (reinforced concrete pillars). The total height of the superstructure, including the road layers, is 81 cm in the middle span and 114 cm on internal supports, and a width of 11.48 m. The width of the slab is 8.80 m. Sidewalk supports with a reach of 1.34 m and a thickness of 18 cm were made on both sides.

In order to reproduce the shape of the object, we made a detailed geodetic inventory, which allowed us to draw the transverse and longitudinal sections of the viaduct. Odkopaliśmy fundament filara określając jego rozmiary. In addition, we have made numerous forgings of layers and openings of reinforcement, both for the lower bottom of the slab and the upper one over the pillars and in sidewalk cantlever. We also discovered the pillar reinforcement locally. We determined the class of concrete by performing non-destructive tests with a Schmidt hammer.

The obtained test results for the structure of the object were used to determine the load class of the viaduct according to the Polish standards and Eurocode, based on performed FEM model. According to Polish snaddard the viaduct meets the requirements of the highest load class A. The highest load class according to the European standard was somewhat lacking, due to insufficient top reinforcement above the pillars. We recommended that the highest class load according to European guidelines can be achieved by adding reinforcement at the top over the supports in the form of steel flat bars glued and anchored to the slab. We have also developed guidelines for the protection and repair of both the structure and the equipment of the viaduct.