From 1957 to 1967 Dorsch planned about 800 kilometers of highways and low cost roads in Iraq. Preliminary studies, preliminary design, final design and site supervision were the main fields of activity.
- Highway Bagdad - Kirkuk, 200 km
- Highway Bagdad - Nasiriyah, 200 km
- Highway Bagdad - Mossul, 150 km
- Low cost mountain road Zakho - Amadiyah, 100 km