infrastructure asset monitoring – SILLE

Helping to monitor the stability of critical infrastructure objects (such as water treatment facilities, roads, utility grids, bridges, and railways) in order to ensure public safety in a cost-effective way.

Main functionalities/Main features:

  • e-Service enables to monitor the subsidence or uplift of infrastructure in a simple manner
  • Detects early warning signs of critical infrastructure
  • The trustworthy method, the results are repeatable
  • Historical Analysis, the opportunity to look back in time- data from 2014
  • High accuracy measurement comparable to geodetics
  • Trend analysis of the whole region, not only individual object

Key benefits:

Cost-efficient. Subsidence and deformation monitoring is largely performed manually today by engineers who must go on-site to an e.g. a bridge or a dam and depending on the size of the structure and area, spend a few days, a week or longer, measuring levels of subsidence and deformation by hand. This is costly and even more so if the area that needs to be measured is e.g. 1km2, 10km2 or 100km2.

Target groups:

Our clients include Large Private Corporations, Public Sector Companies, and Government institutions from different business sectors: Defense structures, Educational and Research institutions, Engineering and Manufacturing Companies, and many others including the European Space Agency, US Federal Emergency Management Agency, The White House, Eastman Chemical, Schnabel Engineering, Estonian Land Board, Enterprise Estonia, Estonian Road Administration, Estonian Ministry of the Environment, Tallinn City.

Value created:

Environmentally friendly solution- less CO2 emissions. The remote monitoring system significantly reduces the number of trips to objects without problems. If the vehicle consumes 40 l of petrol when driving back and forth to one infrastructure object, it emits about 96 kg of CO2.


  • Government organizations use Sille to monitor and detect deformation of bridges for early renovation and helps to focus budgets to most structurally deficient assets.
  • City authorities use satellite-based monitoring to detect building deformation, hazard zoning, and rebuilding priorities.
  • Engineering companies use Sille to monitor the stability of embankment levels (floodwalls) to find parts of the levels that could break during high water flows and repair them in advance.
  • Energy Corporations use Sille to monitor dam stability at one of the biggest hydroelectric dams in Europe to find out portions of the dam that needs repairs. Energy companies are also using Sille to regularly monitor and assess ground deformation from underground mining, to increase the safety of their operations and stability of high pile ash/dirt waste walls for environmental and business concerns.
  • Mining & Metallurgy monitors the stability of tailing dams to enhance safety and find dams that need repairs or will be closed. Sille monitors stability of open-pit mining slopes, to secure unstable slopes and ensure that employees are safe in remote areas.
  • Real Estate monitors building deformation and subsidence throughout the entire construction life cycle (pre, during, and post-construction).
  • Chemical Corporation use Sille to monitor the stability of one of its production plants, to find hidden deformation which can damage pipeline connections, and danger structural stability.


  • County water association, USA. Sille provides the regular slope deformation monitoring in remote and mountainous areas. The risk of landslides is hazardous to the water pipeline connections in the area. Sille provides predictive maintenance information so that construction work can take place in affected areas to secure the slope before a critical fault arises.
    Monitoring time: January 2018 to May 2020
    Area: 0.55 km2
    Survey: Once every two weeks
  • Department of Transportation, USA.
    Sille provides the deformation survey for large infrastructure objects (bridges, lifted intersections, and similar) which are very difficult to measure with traditional methods. This helps the client to highlight locations that are most affected, which enables them to focus on affected areas and save on costs as a result.
    Monitoring time: August 2019 to August 2020
    Area: 9.38 km2
    Survey: Once every two weeks
  • Chemical Corporation
    Sille monitors the stability of the production plant to find hidden deformation which can damage pipeline connections and pose a risk to the plant’s structural integrity. Sille helps the corporation to plan the demolition of the building and focus the maintenance crew’s focus on potential hazards, otherwise unseen.
    Monitoring time: October 2014 to October 2020
    Area: 0.19 km2
    Survey: Weekly
  • Airport
    Sille monitors the stability of the hillslopes around the airport for predictive maintenance, specifically regarding potential landslides, rockslides, and the quality of slope reconstruction work that has taken place. Access to airport territory is difficult and wide-area remote sensing saves on costs and gives the client a full, wide-area overview.
    Monitoring time: October 2018 to June 2019
    Area: 6.52 km2
    Survey: Once every two weeks


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