Tearing down the Alaskan Way Viaduct and transforming Seattle's waterfront
The Alaskan Way Viaduct: How Seattle chose the Bertha tunnel alternative
ALASKAN WAY VIADUCT TUNNEL REPLACEMENT TUNNEL+SPACE NEEDLE
Shaping Communities: Alaskan Way Viaduct Replacement Program
Tunnel to replace Alaskan Way Viaduct, Seattle, US
The State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel in the city of Seattle, Washington, United States. The 2-mile (3.2 km), double-decker tunnel carries a section of State Route 99 (SR 99) under Downtown Seattle from SoDo in the south to South Lake Union in the north.