Fortune 1000 rank: 720Best Companies rank: 74No. of U.S. employees:
4,650Most common salaried job:
EngineerAvg. pay in that job:
$77,561What makes it so great?
Builder of roads, bridges, and dams has a zero-accident goal. One worker told us, "If you or anybody feels something is unsafe, you will not be fired. You will be rewarded." NEXT: Intuit