Legal

Image credits

Here you will find the author, source and license of the photographs and renderings used on this website whose license requires attribution. All other images are produced by BII GmbH itself, supplied by the respective customers or taken from licensed image libraries.

Koralm Tunnel case study — title image

Used on: /en/references/koralm-tunnel

Photo: Karl Heinz Ferk — inaugural run at the eastern portal of the Koralm Tunnel, 12 December 2025.
Source: Wikimedia Commons · License: CC BY-SA 4.0

The image has not been altered in substance. For delivery on the web it was merely scaled and re-encoded into a modern image format.

Tunnel portal rendering

Used on: home page, /en/references, /en/owners-and-builders

Loeringhoff bridge case study — photographs

Used on: /en/references/loeringhoff-bridge