Transit Mix Concrete & Materials is a branch of Trinity Industries, which is a company that provides repetitive products and services for transportation, industrial and construction sectors. Trinity operates a number of business groups that include Trinity Rail, Trinity Railcar Leasing and Management Services, inland barge, construction products and industrial products. Trinity s construction products group manufactures a variety of pipefitting and is a regional producer of concrete and aggregates serving Texas markets. Trinity continues its legacy as one of the most respected manufacturers of pressure vessels and related components in the world. Transit Mix Concrete & Materials has a location in Texarkana, Texas.