After a final, Feb. 28-March 6 maintenance stop, the world’s largest-diameter tunnel-boring machine has moved less than two blocks away from the disassembly pit in Seattle. TBM “Bertha,” churning a 1.7- mile-long tunnel for a state Route 99 replacement of the Alaskan Way Viaduct, required a stop less than 1,000 ft from the pit to confirm that the 57.5-ft-dia machine was 6 in. off course alignment.
Costs for Kinder Morgan Inc.’s 715-mile-long Trans Mountain oil-pipeline expansion in Alberta and British Columbia have risen to $5.48 billion from $5 billion since 2014, when the project was announced, company officials said on March 9.
In a March 8 decision, a Wayne County, Mich., judge has thwarted the latest attempt to delay construction of the $4.5-billion Gordie Howe International Bridge, between Detroit and Windsor, Ontario.
When the Trump administration finally reveals the details and timing of its much-touted infrastructure investment program, the American Society of Civil Engineers has a good idea of what needs to be done.