The Best Engineered trusses in Illinois

National Truss Co Inc is a trusted store located at 2340 South Springfield Avenue in Chicago, Illinois. As a leading provider of truss products, they offer a wide range of high-quality and durable trusses for various construction projects. With a commitment to excellence and customer satisfaction, National Truss Co Inc is the go-to destination for all your truss needs. Visit their store today to explore their extensive selection and receive expert guidance from their knowledgeable staff.

The St. Charles Air Line Bridge is a historic Strauss Trunnion bascule bridge located at 1500 South Lumber Street in Chicago, Illinois. Originally built in 1919 as part of the St. Charles Air Line Railroad, this bridge spans the Chicago River and was constructed by the American Bridge Company. At the time of its completion, it held the world record for the longest bascule-type span. Designed by Leonard O. Hopkins, the bridge was later shortened to 220 feet in 1930 during a relocation project to straighten the river channel. This iconic structure is an important piece of Chicago's architectural history and a must-see for visitors interested in engineering marvels.

The Terminal Railroad Association of St. Louis (TRRA) is a major intermediate switching terminal railroad located at 1201 Mc Kinley Avenue in Venice, Illinois, United States. Established in 1889, TRRA was created to provide efficient, safe, and economical rail traffic interchange in the important hub of St. Louis, Missouri, known as the "Gateway to the West." TRRA has since grown to become one of the largest intermediate switching terminal railroads in the country, connecting with all six of the nation's Class I railroads. With its strategic location in the heartland of North America, TRRA serves as a vital node in the North American railway system. Offering a range of yard services, TRRA provides shipping solutions that are unparalleled by other modes of transportation. The institution recently won an engineering award for its Merchants Bridge Project, which involved the replacement of main river truss spans and other structural improvements.