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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.

Crews completed a permanent splice on the fractured Delaware River Bridge, which links Pennsylvania and New Jersey, one month early, allowing I-276 traffic to resume on March 9 for the first time since Jan. 20, when the crack was found on the 1.25-mile-long symmetrical truss bridge.

Oklahoma transportation officials will seek private-sector assistance to close the last gap in the Gilcrease Expressway, a highway that loops around downtown Tulsa.

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.

Airports face an annual $10-billion shortfall to meet their rising infrastructure needs, which total $99.9 billion over the next five years, an airport group says in a new report.