A high‑performance family of corrugated steel structures for bridges, culverts, drainage, and underground storage.

Geoquest offers two corrugated steel solutions designed for fast installation, high structural performance, and long‑term durability in above‑ground and buried infrastructure. Depending on your project requirements, you can choose between our bolted corrugated steel solution for large-span structures or our helical corrugated steel solution for efficient underground pipelines and storage.

CSS Bolted

Geoquest corrugated steel bolted solution delivers modular structures ideal for road and railway tunnels, mountain infrastructure, and multilayer intersections. Its bolted assembly structure ensures extremely fast installation even under severe climatic constraints. With high load‑bearing capacity and reliable long‑term performance, the solution enables safe and continuous traffic flow in all project conditions. 

Need for rapid construction in all weather conditions 

Harsh climates (mountain areas, ski stations)

Sites requiring multiple simultaneous structures

Upgrading aging road and railway infrastructure 

  • Wide range of plates, heights and spans depending on project and application
  • Modular construction enabling rapid on‑site assembly
  • Suitable for multilayer intersections and high‑load scenarios
  • Open‑profile arches, multi‑span arches, closed profiles
  • Anti‑corrosion option with galvanizing and painting 
  • Lifespan up to 80 years 

Very fast installation within few days sometime

Reduced costs compared with concrete solutions

Safe and continuous traffic during and after installation

Ideal for complex terrains or difficult site access

CSS Helical

Geoquest corrugated steel helical solution offers a complete range of pipes and underground tanks for road, industrial, and municipal infrastructure. Engineered for weak soils, high groundwater levels, and continuous traffic loads, the solution ensures fast installation with no traffic disruption. Delivered in segments or complete units, it guarantees flexibility, reliability, and long‑lasting structural performance.

Weak soils such as peat requiring closed‑shape culverts

Growing demand for stormwater retention and firefighting reservoirs

Upgrading aging underground networks

Urban works requiring zero traffic disruption

Increasing climate‑related stormwater pressures

  • Wide range of plates and diameters depending on project and application
  • Galvanized or polymer‑coated steel structure
  • Segment‑based delivery with coupling bands
  • Available in round or compressed shapes
  • Lifespan up to 100 years

No traffic disruption during construction phases

Ability to handle heavy loads and harsh environments

Full turnkey firefighting structures

Easy and fast installation

High hydraulic capacity and suitable for weak soils and high groundwater

Lightweight structure reduces installation costs

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