Contractors lavished an Amtrak manager with $150,000 in cash bribes, luxury cars, vacations, and a pure-bred German shepherd puppy. In exchange, he approved millions of dollars in extra work.

In January 2017, two executives at a construction firm working on the restoration of 30th Street Station’s limestone facade took an Amtrak employee out to dinner. They came bearing a gift.

An anonymous tip led to a yearslong investigation and federal charges tied to a bribery scandal at 30th Street Station. Plus, ...

All have pleaded guilty. The 30th Street Station restoration is a $10 billion, 35-year plan that includes the ongoing $550 million project to renovate the south concourse and Market Street plaza.