Because it has been awhile, this might be a good time to check in on Washington’s favorite transportation project and see how Bertha is doing beneath the streets of Seattle. … Yep, it’s still there. Still stuck where it has been for the past eight months. Still representing the state’s almost-comical foibles with major construction projects. Yes, those foibles would be comical — if there weren’t hundreds of millions of taxpayer dollars at play.
You may have heard of Bertha. The device, with a diameter of 57.5 feet, is billed as the world’s largest tunnel-boring machine, and it has been tasked with carving an underground path for the purpose of replacing Seattle’s Alaskan Way Viaduct. The idea is to improve safety by eliminating a highway system that could be vulnerable to an earthquake, and to open up the city’s waterfront to commercial development.
Well, Bertha started doing her thing late last year and then ran into an 8-inch steel pipe that stopped it in its tracks. A counter on the Washington Department of Transportation website notes that Bertha has traveled 1,023 feet in its planned 9,270-foot journey. There have been developments, even if there hasn’t been progress. Seattle Tunnel Partners is building a 120-foot-deep pit to reach Bertha. When the pit is complete, the machine will tunnel forward into it, so workers can access and reinforce Bertha’s tunnel-boring head.
Someday, the project will become a case study for university engineering students. But for now it serves as an example that changes are needed in how Washington approaches megaprojects. Bertha’s breakdown and potential revival are expected to cost $125 million, not to mention the cost of an expected 15-month delay in a project that already had a price tag of more than $4 billion. The latest boondoggle can be added to the mess that has been the replacement of the state Highway 520 floating bridge across Lake Washington. That project has been beset by problems — including improperly designed pontoons — that have left it years behind schedule and added hundreds of millions of dollars to the cost.