Engineering firm The Greenbrier Companies Inc. will expand its approximately 10,000 square feet of office space in Colleyville to 12,800 square feet at 99 Main St. in Colleyville. The company is remaining in its space but leasing all of the bottom floor of the building in the Village at Colleyville.

The company is a supplier of transportation equipment and services to the railroad industry, building new railroad freight cars and marine barges. 817-788-4699. www.gbrx.com