The 2016 Top 500 Design Firms. The market for construction design services is healthy, with a few exceptions. The buildings market continues to grow at a measured pace, and the passage of the federal Fixing America’s Surface Transportation (FAST) Act, as well as progress in Congress on other federal infrastructure funding initiatives, have many designers in the infrastructure markets optimistic. While low oil prices have depressed the markets for big-ticket oil and gas work and the power market seems sluggish, most U.S. design firms are in a good frame of mind. The table below shows only rankings and firm name. For complete data from the Top 500 Design Firms list see the following links.