Forensic Investigation of Light-Rail Track

The project consisted of cast-in-place, concrete pavement, light-rail track sections at road intersections in Seattle, WA. The pavement system at the road intersections consisted of a bonded overlay system made up of 12 in. thick portland cement concrete pavement bottom layer with a 5 in. thick bonded topping layer. CA was retained to investigate and determine the cause(s) the observed the distress which consisted of hairline cracking in the bonded topping layer of the pavement. CA’s investigation included the review of construction documents and several site visits to perform detailed condition surveys including photographic documentation. CA determined the cause of the distress and recommended repair and remediation options.