Heard this one before?
The temporary closure of Seattle’s Alaskan Way Viaduct to accommodate construction — code name: “Viadoom” — was going to paralyze the city. The elevated highway carries about 110,000 vehicles a day. Without it, travel times would soar 50 percent, predicted the traffic analytics firm Inrix.
The highway was closed from April 29 to May 8, and we now have a solid read on the effect. Wouldn’t you know it — Viadoom, like so many Carmageddons before it, didn’t live up to the hype.
“Commute times have not dramatically increased and several of the major routes into the city have been only moderately affected,” the company’s Lytang Kelley told Crosscut. Commuters on these routes only spent a few more minutes in traffic, Crosscut reports.
The fact that Viadoom turned out to be much milder than expected carries special significance because right now Seattle is spending $4.2 billion (expected cost overruns notwithstanding) to replace the viaduct with an underground highway.
Five years ago, highway opponents argued that a surface street with better transit could handle the travel demand just as effectively as the $4.2 billion megatunnel. But they were marginalized by highway boosters in city and state government who backed the project and said the underground highway was absolutely essential to keeping the city running.