Case Study

MBTA Silverline
Boston, Massachusetts


Modern Continental


The Central Artery/Tunnel Project in Boston has had many challenges. Determining the potential encroachment of a pair of transit authority tunnels beyond an easement space was the challenge for this project. Approximately 14 scans were taken down each tunnel barrel. The scans were registered to a common work-space and transformed to site coordinates. The 3D profiles were extracted from the laser scan model at 25' spacing down the tunnel. This method save many field man-hours and resulted in a highly accurate deliverable.