Cause of Seattle tunnel machine stall unknown

SEATTLE — After sending six probes into the ground in downtown Seattle, workers are still not sure why a giant tunnel boring machine is stuck under the city.

The Seattle Times reports those probes into the soil in six locations in front of the tunnel machine haven’t bumped into any huge obstructions.

Project leaders originally speculated an unusually wide bolder, deposited by ancient glaciers might be blocking the machine known affectionately as Bertha.

The machine is about 60 feet under Seattle streets and about one-tenth of the way toward completing a 1.7-mile tunnel. It will carry Highway 99 traffic and allow the demolition of the Alaskan Way Viaduct on the waterfront.

Progress on the tunnel has been halted since Dec. 6.

More in Local News

Minutes mattered the day Pat Ward was brought back to life

The Mukilteo police and fire chaplain died at breakfast. She got a second chance thanks to a waitress.

Cool additions at an elementary school in Everett

A totem pole and new gardens grace the courtyard of Whittier Elementary School.

Kids suspected in school’s smashed windows and other damage

The cost of the damage at Explorer Middle School in south Everett is estimated to be $5,000.

Recall issued for about 1,250 pounds of meat

Camano Island’s Sausage Haus products might be contaminated.

3 women seek open seat in 39th District

The GOP nominees hope to fill the opening created by the resignation of Republican John Koster.

Lake Stevens High senior has an entrepreneurial mind

John Cramer crafts and sells designer pens to help pay for college

Marysville-Arlington fiber-optic link planned by Comcast

The high-speed internet line, to be ready next year, is seen as a boost for business development.

Second former student files abuse claim against teacher

The woman says Cascade High School’s Craig Verver had sexual contact with her on campus.

Boy stuck in child care instead of going to school

District says it can no longer provide transportation for the special-needs student.

Most Read