We set out in 1992 under the name Demir İnşaat, and today, as Deha Altyapı, we carry more than thirty years of experience. In all that time the work itself has not changed: opening Türkiye’s difficult routes, and keeping open what we have built.
Since our first day we have taken on work in every field of infrastructure and superstructure engineering — from highway tunnels to bridges and viaducts, from hot mix asphalt roads to drainage systems. Mountain pass tunnels, slope stabilisation in landslide zones and post-earthquake repair works hold an important place in our portfolio. This is not easy work; that is precisely why few companies do it.
When we modernise urban and intercity transport networks, we respect the substance of the project. Where a route will pass, how many metres of excavation a given section requires, where the water will be discharged — each of these is an engineering decision, and we do not compromise on them.
We work with our own asphalt production plants, our own equipment fleet and a technical team with deep field experience. Keeping the entire chain under our own control — from production to laying, from excavation to compaction — feeds directly into both the schedule and the quality.
Our service areas
We carry out every item of a highway project with our own team.
