The adventure of Bertha the tunnel-boring machine, already two years behind schedule, has a new twist.
Mike Lindblom reports: "Gov. Jay Inslee ordered Highway 99 tunnel contractors Thursday to suspend drilling the deep-bore tunnel along the Seattle waterfront, until a sinkhole that formed this week is fully investigated."
Though the sinkhole has been filled, ground above the Bertha tunnel-boring machine is continuing to sink, according to the Washington State Department of Transportation (WSDOT). "But in calling for the work to stop, the governor aired the worry shared by many citizens — that if Seattle Tunnel Partners (STP) continues to dig too much soil as Bertha proceeds north, the viaduct and downtown buildings could be threatened," according to Lindblom.
The article includes details about how the steps the state is taking to inspect the project while its suspended. The state's actions reflect a new twist in its relationship with contractors on the project. More also can be found on the document announcing the suspension of the project.
FULL STORY: Inslee orders tunnel dig halted as soil sinks above Bertha
Another, Final(?) Delay for Alaskan Way Viaduct Replacement
The Washington Department of Transportation announced that Seattle's Alaskan Way Viaduct will close permanently in January 2019, with service switching over the tunnel Bertha built. The previous plan expected the switch to occur in the Fall.
Bertha Awakens—New Hope After a Two-Year Delay for Seattle Tunnel-Boring Machine
Baby steps are an improvement for the tunnel-boring machine known as Bertha. The drill moved a total of 1.5 feet this week, but the symbolic distance probably felt like a mile.
Seattle's Most Dramatic Traffic Reduction Will Occur Next Month
There will be no road closures, no traffic bans, no loss of parking, and no new transit lines opening. Call it the "tolling effect" on Nov. 9 when motorists have to pay to drive through the two-mile State Route 99 tunnel that opened last February.
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
Maui's Vacation Rental Debate Turns Ugly
Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.
Restaurant Patios Were a Pandemic Win — Why Were They so Hard to Keep?
Social distancing requirements and changes in travel patterns prompted cities to pilot new uses for street and sidewalk space. Then it got complicated.
In California Battle of Housing vs. Environment, Housing Just Won
A new state law significantly limits the power of CEQA, an environmental review law that served as a powerful tool for blocking new development.
Boulder Eliminates Parking Minimums Citywide
Officials estimate the cost of building a single underground parking space at up to $100,000.
Orange County, Florida Adopts Largest US “Sprawl Repair” Code
The ‘Orange Code’ seeks to rectify decades of sprawl-inducing, car-oriented development.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Heyer Gruel & Associates PA
JM Goldson LLC
Custer County Colorado
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Jefferson Parish Government
Camden Redevelopment Agency
City of Claremont