270W, 270C, 270E

Splitting inside the Beltway I-270:

270E- B&O North Central Freeway/ Grand Arc Mall Tunnel

270C- Wisconsin Avenue Corridor Tunnel, with split to Archibald-Glover and I-66 Tunnels

270W- Canal Road Twinned

Build270E and 270W together first as the most cost effective, with an I-66 K Street interchange including space for a 270C link