The award was issued under a Contract Award Notice dated 16 January 2026 and published on 19 January 2026. The project involves the refurbishment and structural upgrading of an existing radar tower facility in North Rhine-Westphalia.
Contract Details
The contract is classified as a public works procurement under reference number 020-25-00429. It focuses specifically on structural and shell construction works (Rohbauarbeiten) required to modernize an existing radar tower with a gross floor area of approximately 600 square meters and an overall height of 48 meters.
The objective of the project is to adapt and renovate the radar tower to meet current operational and structural requirements while ensuring long-term durability and safety.
Scope of Works
The awarded scope includes comprehensive site setup and earthworks, including excavation of a construction pit covering approximately 450 m² with an excavation depth of around 2.0 meters. Drainage works include the installation of utility trenches with excavation volumes of approximately 45 cubic meters.
Structural works include the construction of visible masonry exterior walls, reinforced concrete works for a new stair tower extending up to 36.5 meters in height, installation of prefabricated stair elements, cantilever slabs at elevated levels, and the use of approximately 100 tonnes of reinforcing steel. Additional works include insulation and waterproofing of the new tower structure and installation of an internal assembly scaffold with structural verification.
Entities Involved
- Procuring Authority: Bau- und Liegenschaftsbetrieb NRW (BLB NRW), Duisburg
- Winning Contractor: Heinrichs & Overkämping Objektbau GmbH, Rhede
- Contract Type: Works
- Estimated Contract Value: EUR 1,027,083.48
- CPV Code: 45223220 (Structural shell work)
Significance of the Contract
The refurbishment of the Marienbaum radar facility supports the continued operation and resilience of critical national infrastructure. Structural upgrades are essential to ensure the long-term functionality and safety of specialized installations such as radar towers.
From a procurement standpoint, the award highlights the role of state-level public clients in maintaining and upgrading technically sensitive infrastructure through specialized construction contracts.
Contractor Background
Heinrichs & Overkämping Objektbau GmbH is a Germany-based construction company specializing in structural and shell construction works for industrial, institutional, and public-sector projects. The firm has experience delivering technically complex building structures across North Rhine-Westphalia.
Conclusion and Next Steps
With the contract now awarded, structural renovation works at the Marienbaum radar site are expected to commence in line with BLB NRW’s project schedule. The project underscores the importance of government procurement in safeguarding and modernizing essential infrastructure assets.
“Well-executed structural refurbishment is critical for extending the service life of specialized infrastructure facilities,” a neutral construction industry observer commented.
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