Klähne Bung

What Klähne Bung does

Klähne BUNG Ingenieure // Beratende Ingenieure im Bauwesen GmbH is a Berlin-based German civil and structural engineering consultancy specializing in bridge and civil engineering structures. Founded around 1996/1997 by Dr.-Ing. Thomas Klähne, the firm operates as part of the BUNG Unternehmensgruppe and is structured as a private German GmbH with three managing directors (Dr.-Ing. Thomas Klähne as geschäftsführender Gesellschafter, Dipl.-Ing. Thomas Abel, and Dr. Gabriel Kubieniec). The firm offers a full-lifecycle suite of structural engineering services: Entwurfsplanung (design planning), Ausführungsplanung (execution planning), Bautechnische Prüfung (statutory structural inspection), BIM/3D planning, Instandsetzungs- und Sanierungsplanung (repair and refurbishment), Stahlbauüberwachung (steel construction monitoring), Bauwerksdynamik (structural dynamics), and expert opinions/gutachten. Underlying technology relies on established engineering and BIM software — SOFiSTiK, SOFiPlus, Dlubal RSTAB/RFEM/FE-Beul, FIDES Grundbau, Strakon, Tekla, Grasshopper 3D, Rhino, and Microstation — with 3D/BIM planning integrated as a core process component rather than an add-on.

The firm's commercial model is professional services billing under the German HOAI fee structure for engineering commissions, acquired through public tenders and direct commissions from a concentrated base of German public-sector infrastructure owners — Land Berlin (Senatsverwaltung), Deutsche Bahn/DB InfraGo AG, Autobahn GmbH des Bundes, DEGES, and municipalities including Stadt Ulm and Landeshauptstadt Magdeburg. Statutory inspection authority is a key differentiator: Dr.-Ing. Thomas Klähne is recognized as Prüfingenieur by Land Berlin and the Eisenbahn-Bundesamt (authorization extended to 2031), and Dr. Gabriel Kubieniec was admitted as Prüfsachverständiger (PSV) of the EBA on 10.06.2026 for steel and composite bridge construction. The firm has been engaged on landmark German infrastructure projects including the Berlin Hauptbahnhof bridges (1997-2003), Kienlesbergbrücke Ulm (2019 Ulrich Finsterwalder Ingenieurbaupreis), Elsenbrücke Berlin, the Gänstorbrücke Ulm/Neu-Ulm replacement (~EUR 40 million, won in competition 02/2020), and the Overfly at Autobahnkreuz Nürnberg-Ost (opened 15.12.2025). Major project delivery is often executed through ARGE working groups with sister BUNG group entities and external partners such as KRP Architektur GmbH. Marketing and business development are conducted via professional channels — the company website, peer-reviewed journal publications, and conference presentations — rather than mass-market channels.

Name

Klähne Bung

Legal name

Beratende Ingenieure im Bauwesen GmbH

Website

https://kl-ing.de

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

Klähne Bung is a Berlin-based German structural engineering consultancy specializing in bridge design, structural inspection, and BIM planning for German public-sector infrastructure clients, operating as part of the BUNG Unternehmensgruppe.

Ownership category

akta.pro rank

Product category

Structural Engineering Consulting

NAICS

Architectural, Engineering, and Related Services (5413), Engineering Services (541330), Engineering Services (54133)

SIC

Services-Engineering Services (8711)

akta.pro industry

PRIMARYBPAHAIAA

Civil & Structural Engineering Consulting

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Engineering & Technical Consulting

SECONDARYBPAHAKAK

Building Information Modeling (BIM) & Digital Design Services

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Architecture, Design & Planning Services

Keywords

• Structural engineering consulting
• Bridge design services
• Structural inspection
• BIM 3D planning
• Steel construction monitoring

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Engineering Consulting Services: Klähne Bung generates revenue through fee-based engineering consulting services including design planning (Entwurfsplanung), execution planning (Ausführungsplanung), structural technical inspection (bautechnische Prüfung), BIM/3D planning, rehabilitation planning, steel construction monitoring, structural dynamics analysis, and expert opinions/gutachten. Services are billed on a project basis according to German HOAI (Honorarordnung für Architekten und Ingenieure) fee structures. Projects span the full lifecycle from concept through construction supervision and inspection.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Klähne Bung is a Berlin-based consulting engineering firm specializing in structural engineering for bridges and civil engineering structures. The firm provides design planning (Entwurfsplanung), execution planning (Ausführungsplanung), statutory structural technical inspection (bautechnische Prüfung), BIM/3D planning, repair and refurbishment planning, steel construction monitoring, structural dynamics analysis, and expert opinions across the full project lifecycle. Services are delivered to German public-sector infrastructure clients and are billed according to German HOAI fee structures.

Product overview

Klähne Bung is a civil engineering consultancy (Beratende Ingenieure im Bauwesen GmbH) operating as part of the BUNG Unternehmensgruppe, headquartered in Berlin. The firm offers a unified suite of engineering services centered on bridge and structural construction. The core offering spans the full project lifecycle: Entwurfsplanung (design planning) and Ausführungsplanung (execution planning) form the primary design and detailing services, supported by Bautechnische Prüfung (structural technical inspection) as a separately recognized Prüfingenieur function. Specialized capabilities include BIM-/3D-Planung (3D/BIM planning), Stahlbauüberwachung (steel construction monitoring), Bauwerksdynamik (structural dynamics), and Instandsetzungs-/Sanierungsplanung (repair/refurbishment planning), all complemented by Beratung/Gutachten (consulting/expert opinions). The portfolio covers bridges (steel, composite, concrete), railway structures, road infrastructure, industrial buildings, hall structures, towers/masts, special foundation engineering, and rehabilitation projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Entwurfsplanung (Design Planning) Conceptual design of structures combining engineering knowledge of load-bearing systems, materials, construction methods, site conditions, and aesthetics to create bridge and structural designs, including award-winning competition results. Targeted at German public-sector infrastructure clients.
• Ausführungsplanung (Execution Planning) Detailed elaboration of construction designs, including structural stability calculations and production of formwork/reinforcement plans, steel construction plans, and assembly plans using SOFiSTiK, SOFiPlus, Dlubal, FIDES Grundbau, Strakon, Tekla, Grasshopper 3D, Rhino, and Microstation.
• Bautechnische Prüfung (Structural Technical Inspection) Statutory review of design and execution documents for structural stability, serviceability, welding technology, economy, and contractual compliance. Officially recognized by Land Berlin and Eisenbahn-Bundesamt (EBA) for inspections in bridge construction and structural/steel engineering, with PSV authorization held by Dr. Klähne (through 2031) and Dr. Kubieniec (from 10.06.2026).
• BIM-/3D-Planung (BIM / 3D Planning) 3D planning integrated throughout the design process, providing model-based decision-making, visualization, variant comparisons, cost and schedule certainty, aesthetic optimization, construction sequence planning, and interdisciplinary information exchange. Capable of serving as BIM-Fachkoordinator or BIM-Gesamtkoordinator in projects.
• Instandsetzungs-/Sanierungsplanung (Repair/Refurbishment Planning) Damage assessment, repair planning, and monitoring of repair work for structural rehabilitation, including three Sachkundige Planer for concrete components and experienced planners for steel bridge refurbishment.
• Stahlbauüberwachung (Steel Construction Monitoring) Monitoring of fabrication and assembly of steel and steel-composite bridges, including welding technology and corrosion protection, delivered by trained Schweißfachingenieure (welding engineers) and a DIN-certified corrosion protection inspector.
• Bauwerksdynamik (Structural Dynamics) Dynamic analysis of structures, including measurement-based and computational investigation of load-bearing structures using dedicated measurement technology and software, addressing dynamic effects from heavier vehicles, higher speeds, and lighter constructions.
• Beratung/Gutachten (Consulting / Expert Opinions) Advisory services for clients from concept through construction to completion, and expert assessments of existing structures regarding remaining service life, damage evaluation, and remediation measures.

Quantifiable outcome

• Gänstorbrücke Ulm/Neu-Ulm: Single-span integral frame bridge with a clear span of 86.50 m, planned to be among the longest frame structures in Germany upon completion
• +3 more outcomes

Named customers7 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• BUNG Ingenieure AGcoreStrategic or Co-development Partner · 1 January 2019Klähne Bung is a member of the BUNG Unternehmensgruppe. The two firms collaborate on major infrastructure projects as ARGE (Arbeitsgemeinschaft / working groups). For the Gänstorbrücke Ulm/Neu-Ulm, the ARGE includes Klähne Bung (object planning LP 1-9, structural engineering LP 1-6, project leadership), KRP Architektur GmbH (architecture), and BUNG Ingenieure AG / BUNG Baumanagement GmbH (construction management). The firms share a unified careers portal and coordinate on business development.
• EUCON-BUNG GmbHminorOthersEUCON-BUNG GmbH is a 'BUNG sister company' that shares office premises with Klähne Bung since 2025. The two firms jointly participated in the 2026 Berliner TEAM-Staffel 5x5km relay event, indicating a close operational relationship within the BUNG group ecosystem.
• KRP Architektur GmbHcoreStrategic or Co-development PartnerFor the Gänstorbrücke Ulm/Neu-Ulm project, Klähne Bung and KRP Architektur GmbH formed a planning partnership, winning the competition in February 2020 and subsequently delivering the object and structural planning as a joint team. KRP is responsible for the architectural design while Klähne Bung handles the engineering.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• COWI A/S: Large international engineering consultancy with a major bridge practice and presence in Germany. Represents the scaled incumbent competitive set on large public infrastructure tenders.
• Arup: Global engineering consultancy with strong structural and bridge capabilities and German operations. Comparable at the technical-craft level and a competitor on complex signature infrastructure commissions.
• EUCON-BUNG GmbH: BUNG sister company sharing office premises with Klähne Bung. Adjacent within the group, providing engineering services that complement rather than directly overlap with Klähne Bung's structural focus.

Direct peers

• Schlaich Bergermann Partner (sbp): Premier German structural engineering consultancy specializing in bridges, cable structures, and innovative lightweight design. Highly comparable practice profile, similarly focused on landmark German infrastructure and design quality, and recognized internationally for bridge engineering.
• Ingenieurgruppe Bauen: Mid-sized German structural engineering firm with similar service breadth (design, inspection, rehabilitation) and public-sector orientation. Comparable niche competitor for German bridge and infrastructure tenders.
• Wetzel & von Seht: Hamburg-based structural engineering consultancy specializing in bridges, tunnels, and civil structures. Direct competitor on German northern-region infrastructure projects with comparable regulatory inspection credentials.
• BUNG Ingenieure AG: Direct sister company within the BUNG Unternehmensgruppe and frequent ARGE consortium partner on major bridge projects (e.g., Gänstorbrücke Ulm/Neu-Ulm). Offers overlapping structural engineering and construction management services to the same German public-sector clients.
• Leonhardt, Andrä und Partner: Long-established German structural engineering consultancy with a strong bridge and civil structures practice. Directly comparable in services, German public-sector client base, and seniority of inspection credentials.
• Bollinger + Grohmann: German structural engineering consultancy active across bridges, buildings, and complex geometry. Comparable in its BIM integration, design-engineering emphasis, and project portfolio of technically challenging German structures.

Others

• KRP Architektur GmbH: Architecture firm partnering with Klähne Bung on integrated bridge design (e.g., Gänstorbrücke). Comparable ecosystem participant providing the architectural counterweight to Klähne Bung's structural engineering role in ARGE consortia.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Klähne Bung