The tunnel has a new concrete floor slab and new side wall brackets
Callahan Tunnel Project Entrance at North and Cross Streets
Reinforced brackets have been installed to hold side panels
Worker after shift inside tunnel
Media Day at the Callahan Tunnel Project
Frank DePaola, MassDOT Highway Administrator, speaks to reporters outside the Callahan Tunnel
MassDOT Community Liasion, John Romano inside the Callahan Tunnel
For the concrete work, the tunnel was heated with a door at the entrance
Workers leaving a shift inside the Callahan Tunnel
Reporters tape a broadcase withthe newly reinforced side panel brackets shown on the wall
As the underground project comes to completion, work continues above on the vent tunnel building on North Street