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Industrieanlagenbau GmbH (IAB) High-Performance Steel Structures for Road Signs

single-bar construction

Industrieanlagenbau GmbH (IAB) specialises in the development, production and installation of create high-quality steel structures. Its current product range includes container and constructional steel assemblies for a wide range of industries, including road traffic, energy and mobile communications.

Steel structures for road signs and toll systems

IAB supplies structures for dynamic traffic systems, static signage and toll systems for the road industry.

The company’s carrying structures are planned and produced according to the specifications of the RVS in Austria and the ZTV-ING in Germany, and mounted over motorways and highways.

Accessible double-bar structures, spanning up to 55m, are typically used for dynamic traffic guidance systems.

For static signage on cross-country roads, highways and motorways, single-bar structures are used as cantilevers or sign bridges. Depending on customer requirements, the carrying frameworks are accessible or inaccessible. Single-bar designs span up to 28m.

Dedicated carrying structure series for toll systems are planned depending on the requirements of carrying loads and spans. They are usually presented as modular builds, to map all necessary spans with one structural concept.

Bespoke steel and welding constructions for railway bridges

IAB supplies dynamic, highly resilient welding constructions, as well as creating and installing street and railway bridges, and hall constructions, according to the client’s requirements.

Components are produced according to EN 1090 – EXC 2 to EXC 4, and delivered ready for installation.

Steel-carrying structures and industrial services

IAB plans, produces and installs approximately 150 carrying structure sites a year, as well as provide industrial services, including:

  • Structural calculation according to Eurocode 3
  • Execution planning with 3D construction programmes
  • Work preparation
  • Material cutting
  • Welds assembly and assessment using visual inspection (VT), magnetic particle (MT), radiography (RT) or ultrasonic (UT) procedures
  • Surface protection (hot-dip galvanisation according to EN ISO 1461, preservation up to C5H or powder coating)
  • Delivery and installation by autocrane or helicopter

IAB’s mounting crews mount and install carrying structures across Europe. The carrying structures are planned and executed according to EN 1090 – EXC 3.

About IAB

Founded in 1982, IAB’s 10,000m² production premises in St Stefan im Lavanttal, Austria, undertakes any technical challenge in steel construction.

Capable of processing approximately 4,500t of steel a year, the facility has state-of-the-art machinery; a high-performance steel-shot blasting plant and the heated preservation hall.

IAB produces high-quality welding constructions with a unit weight of up to 60t, which are assembled by qualified specialists in three-shift operation. The company is certified to ISO 9001: 2008, DIN EN 3834, EN 1090 – EXC 4 and DIN EN 15085 standards, and covers all necessary prerequisites for planning and production of steel parts.

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Press Release

IAB Provides Traffic Sign Steel Bridges for Highways

Road gantries are used for a wide variety of purposes on highways. Toll recording, traffic data and control systems, and public notices and warnings are part of the standard equipment for sophisticated road services.

White Papers

Steel Structures for Road Signs

This free white paper contains detailed information about IAB's business segments, its portfolio of steel and welded structures, and company details.


Industrieanlagenbau GmbH (IAB) Images

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Press Release

5 September 2016

Road gantries are used for a wide variety of purposes on highways. Toll recording, traffic data and control systems, and public notices and warnings are part of the standard equipment for sophisticated road services.

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Regional Offices

Industrieanlagenbau GmbH (IAB)

Südweg 11

9431 St. Stefan im Lavanttal


+43 4352 51 621 0 +43 4352 51 621 22

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