Construction maintenance and minor repairs of bridges and culverts

The subject of the public contract awarded within the established DNS will be the construction maintenance and minor repairs of bridges and culverts, specifically the following types of work: 1. Bearing maintenance cleaning of bearing seats from mechanical impurities and dust cleaning of corroded steel parts of bearings as accessible in the given bearing position anti-corrosion coating of cleaned bearing parts cleaning and preservation of sliding surfaces cleaning and preservation of elastomer bearings topping up of bearing supports repair of bearing blocks and non-coring (NK) inserts 2. Under-bridge remediation and drainage repairs non-coring (NK) under-bridge remediation of concrete surfaces of the substructure remediation of the upper surface of foundations at ground level remediation of the soffit and side surfaces of the superstructure remediation of vertical parts of cornices repair of expansion joints repair of drainage outlets from drains through the concrete surface of the bridge substructure sealing of diagnostic holes removal of graffiti coatings repair of the steel drainage channel of the superstructure anti-corrosion protection of steel parts on the concrete surface of the substructure and soffit of the superstructure – superstructure soffit beam brackets, utility pipe brackets, PKO plates, rails in the superstructure soffit, etc. repair of longitudinal and vertical drainage pipes including compensators repair or installation of drainage pipes from hollows in the superstructure repair of drainage pipe outlets and drains in the superstructure soffit repair of cable conduits 3. Repairs in the cornice area remediation of the upper surface of concrete cornices cleaning of drainage channels and remediation of the internal surface of concrete drainage channels of the superstructure repair of bridge restraint system elements PKO public lighting columns on the bridge repair of noise barriers on the bridge repair of drains and drainage pipes waterproofing of the bridge deck repair of the drainage strip along the cornices 4. Repair of expansion joints and road surface repair and maintenance of bridge expansion joints repair and maintenance of the road surface (crack repair, local waterproofing repair, local repair of the wearing course) renewal of horizontal road markings 5. Miscellaneous repairs landscaping (removal of shrubs, tree felling, local refilling of backfill and embankments, topping up of topsoil and seeding) shaping and repair of watercourses (cleaning, repair or installation of reinforcement, repair or installation of thresholds) shaping and repair of pavements and reinforcements (cleaning, repair or installation of reinforcement, installation of curbs and bases) – revetments around piers, slope revetments, revetments along abutments and backfill behind cornices at the ends of abutments, paving behind the soffit of an embankment structure, collars around the faces of embankment structures. shaping and repair of inspection stairs, sumps, and discharge points (cleaning, surface remediation of stairs, sumps, discharge points, replacement of stair treads, installation of new stairs, repair or installation of sumps and discharge points) shaping and repair of drainage chutes and ditches (cleaning, repair or installation of chutes and reinforcement of ditch bottoms, repair or installation of outlet structures for subsurface drainage on slopes, cleaning of drainage) shaping and repair of road – traffic safety barriers (renewal of PKO, repair or installation of barriers) For the execution of the above-mentioned activities, the provision of appropriate traffic engineering measures will be necessary (e.g., reduction of the number of traffic lanes, narrowing of traffic lanes, restriction of 1 lane on a directionally undivided road).