CONDITION ASSESSMENT AND REHABILITATION PROPOSAL FOR A „KARPOŠ“ SYSTEM ROAD BRIDGE OVER THE NIŠAVA RIVER

AUTHOR(S) / AUTOR(I): Radovan Perić , Miloš Milić , Nikola Romić

 

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DOI: https://doi.org/10.46793/SGIS26e.206P

ABSTRACT / SAŽETAK:

This paper presents a condition assessment and an analysis of the degradation causes for the road bridge over the Nišava River near the village of Vrandol, in the municipality of Bela Palanka. The structure represents a specific modification of the „Karpoš“ precast system, where steel wagon-type beams were utilized for the superstructure alongside standard substructure elements – specifically, precast piles. Through field investigation and macroscopic inspection, a critical structural condition was identified, primarily caused by the loss of stability in the substructure. Due to the impact of debris and ice, significant deviations from the vertical alignment were observed in the reinforced concrete conical piles. These geometric imperfections induced substantial parasitic stresses within the columns and main girders. Coupled with evident corrosion of the steel elements and degradation of the deck slab due to inadequate drainage, the bridge’s load capacity has been reduced below safety limits. This paper categorizes the recorded damages and proposes urgent rehabilitationl measures, while recommending a temporary traffic ban to prevent structural collapse.

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