Denver's 420,000 sq ft centrepiece for its 25-year transit expansion: three modes under one roof, serving 80,000 daily passengers — built without interrupting a single scheduled service.
Elevated concourse constructed above two active light-rail lines and a freight corridor, with 17 utility relocations on a constrained urban block.
Modular steel bridge sections slid into position during approved weekend windows, combined with 3D utility mapping to resolve all conflicts before breaking ground.