D1 Repair of bridges D1-382 and D1-402 D1 Repair of bridges D1-382 and D1-402

D1 Repair of bridges D1-382 and D1-402 D1 Repair of bridges D1-382 and D1-402
D1-382: The subject of the repair is the general rehabilitation of the upper surface of the bridge after the removal of the existing road and insulation layers. Replacement of the bridge top, cleaning and maintenance of bridge closures, railings and PHS. The wear and bed layer of the road will be milled between CBK and replaced with new structural layers, including the replacement of the underlying layers and the improvement of the subsoil. The maintenance work on the bridges will also include the cleaning and repair of the drainage facilities on the bridge, under the bridge and on the bridgehead, and the replacement of the highway retention system (guardrails and guardrails). D1-402: The subject of the repair is the replacement of the bridge deck, bridge equipment and general rehabilitation of the upper surface of the bridge deck. Bridge closures, noise walls and drainage channels will be preserved. As part of the bridge repair, they will be treated, cleaned and repaired. The structural layers of the roadway between the CBK will be milled and removed, the base of the active zone will be improved, and subsequently new structural layers of the roadway will be made. On the basis of diagnostic surveys and main inspections of both bridges, the following defects were found: Leakage into the supporting structure, unevenness on the upper surface of the concrete bridge deck under the insulation. Insufficient adhesion of the insulation to the substrate, mosaic cracks, branched longitudinal cracks, ruts, local subsidence.