04/28/2026
Laying the concrete for the Triple Underpass, Dallas (1935)
Construction of the Triple Underpass in 1935 shows workers pouring concrete for one of Dallas’ most recognizable transportation structures. The project was designed to allow vehicles to pass beneath multiple railroad tracks, improving traffic flow through the area. Crews, equipment, and forms can be seen shaping the three-arched design. This was part of a broader effort to modernize infrastructure during the early automobile era. Located near Dealey Plaza, the site would later become historically significant. The structure reflected engineering progress in the city. Historic photos capture the labor and scale of the project. The underpass quickly became a key roadway feature. The scene highlights Dallas during a period of development and change.