Downloads

Please use the materials below to learn more about the Purple Line Extension Tunnel Boring Machines (TBMs).

Fact Sheets

• Purple Line Extension Section 1 Infographic Fact Sheet
• Purple Line Extension Section 1 Tunneling Fact Sheet
• Purple Line Extension Section 2 Infographic Fact Sheet
• Purple Line Extension Section 2 Tunneling Fact Sheet
• Purple Line Extension Section 3 Infographic Fact Sheet
• Purple Line Extension Section 3 Tunneling Fact Sheet

Follow the TBMs @PurpleLineTBMs for weekly updates on their progress and more.