Sightline Project
Seattle's Great Viaduct Debate
As Seattle debates a deep-bore tunnel to replace the Alaskan Way Viaduct, Sightline examines the issue of potential cost overruns. The state legislature has made it clear it wants Seattle property owners on the hook—but the cost could be enormous. Read Sightline’s collection of posts on replacing the viaduct and what it means for Seattle residents.
Project Posts
What Could Go Wrong With The Tunnel
The best reporting yet on the threat of cost overruns.
The Tunnel Won’t Be Boring III
Brightwater tunnel cost overruns could top $200 million.
The Facts on Tunnel Costs
A critique of Mayor McGinn falls flat.
Biking To Work Is Too Expensive
We can only afford roads that cost 10 times as much.
The Tunnel Won’t Be Boring II
More lessons for Seattle from the Brightwater project.
The Road That’s Paid With Good Intentions
State says Seattle's on the hook for tunnel cost overruns.
The Bored Tunnel’s $60 Million Cost Increase
A 3 percent overrun on an expensive project could be pricey.
Will Our Costs Runneth Over?
Looking backward (and forward) at the cost of Seattle's viaduct replacement.
A Dissertation on the Viaduct
An academic's analysis of Seattle's great debate.
Wishful Thinking About Tunnel Costs
Cascadia Center repeats misinformation about actual cost overruns.
