Germany – Bridge-design services – 2026-62_K164_ENB_OP_Ing_TWP

The Lower Saxony State Office for Road Construction and Transport (NLStBV), Lingen Division, plans to replace the existing bridge structure over the Große Hase as part of the district road K164 in Löningen. The existing structure, built in 1950, shows significant damage to concrete, sealing, parapets, bearings, and scour protection, and has nearly reached the end of its technical service life (condition rating 2.7; last main inspection 2019). To ensure stability, durability, and traffic safety, a complete replacement is necessary. The new construction will be carried out under a full closure of the K164. The project includes the design of civil engineering structures as well as the specialist planning of structural design according to the HOAI for the replacement new construction, the demolition of the existing structure, and any necessary construction measures. The existing structure (ASB No. 3212503) has the following characteristics: - Year of construction: 1950 - Total length: 40.45 m - Construction: Multi-span bridge, reinforced concrete, slab girder - Bridge area: 423 m² - Clear widths/heights: according to as-built drawings - Pipelines: pressure pipe DN 200, sewer DN 75 - Scour protection: timber sheet piling (Bongossi), partially no longer visible - Damage: concrete spalling, cracks, hollow sprayed concrete, damaged sealing, parapet defects, bearing aging - Condition rating: 2.7 - Bridge class: 30 The structure carries the K164 over the Große Hase in the southern part of Löningen. The K164 has a traffic load of approx. 1,353 vehicles/24 h with a heavy traffic proportion of about 10%. The new construction will be carried out under full closure of the K164; the erection of a temporary bridge is not planned. Traffic will be diverted during construction. The standard cross-section is to be implemented as RQ 9 according to design class 4. Hydraulic calculations and water management basics are not yet available at the beginning of the planning and will be commissioned by the client in parallel with the planning and made available to the contractor upon receipt.