Contract is part of a larger project to double track capacity crossing the Potomac River in Washington, D.C., addressing a key chokepoint for the heavily used passenger rail corridor.

If just a few more feet of loose soil fell from the tunnel ceiling, 27 Los Angeles digging contractors would have been trapped.

Roche is reported to be considering the sale of its cancer data specialist Flatiron Health, just a few years after it bought the company for $1.9 billion. The Financial Times first revealed the ...