The tunnel “voids” affecting properties above the Link Light Rail tunnel path through the hill continue to be identified and addressed. From an article in the Engineering News-Record:
Crews have filled in about 80% of nine voids leftover from a 2-mile tunneling job through Seattleâ€™s Beacon Hill. Japanâ€™s Obayashi Corp. did not discover the voids while boring the parallel, 1-mile tunnels as part of its $280-million contract, which has since increased to $312 million. Owner Sound Transit contends the contractor is at fault.
. . .
â€œWe put Obayashi on notice that we think this is an avoidable situation, and the cost is going to be withheld from its final payment,â€ Gray says. Sound Transit has spent $1.6 million filling the voids.
â€œThe adequacy of the geotechnical data supplied by Sound Transit and the actual behavior of the ground during construction are under discussion with Sound Transit,â€ says Obayashi spokeswoman Carmen Stone.
And they’re not quite done yet: Sound Transit estimates about 430 cubic yards remain left to find and fill. Read the rest of the article at ENR.
via DouglasReiser on Twitter