The Infrastructure Technology Institute at Northwestern University has installed sensors in a concrete masonry-block house near an active limestone quarry. The sensors measure the long-term displacement of existing cracks in interior plaster walls as well as changes in temperature and humidity. In addition, ground motion and air pressure variations are measured in order to compare dynamic blast effects with long-term effects. ITI uses the Milwaukee house as a site to qualify new instruments and monitoring technologies.

In addition to measuring construction and mining vibration, this technology can also be used to measure crack propagation in fracture-critical bridges.

The toolbar on the left side of the screen contains links for each category of information on the site. For example, by clicking one of the links under "Location" you can view pictures of the structure being monitored, where the structure is located in the city, or where the sensors are located in the structure. To compare crack movement and weather conditions, click one of the links under "Crack Displacement Vs:"