Where there's Will(iams Brothers), there's a (high)way. Major road and heavy civil contractor Williams Brothers Construction operates mainly in Texas' Houston, Dallas, San Antonio, and lower Rio Grande Valley areas, but also has completed projects in other states. The company specializes in high-tech bridge building and projects have included the reconstruction of the Queen Isabella Causeway in Port Isabel, Texas and the cable-stayed Fred Hartman Bridge in Baytown, Texas. Williams Brothers also provides earthmoving, paving, utility, concrete, asphalt, and quality control services. The firm's principal client is the Texas Department of Transportation , which accounts for about 95% of its business.