Neka is a steel truss railway bridge in North zone of Iranian railway network. The bridge consists of twelve spans of 3 meters, totaling a length of 40 meters. The bridge has a width of 5.5 meters, and accomodates a single track with an allowable axle load of 20 tons. The bridge has been instrumented with 89 sensors, and dynamic load tests are carried out on it. A sample of the results is provided on the website for research purposes, which you could download in here.