In the spring of 1930, an eight-mile spur for the Gulf, Colorado & Santa Fe Railroad was needed to provide rail access to the West Dallas Industrial District to transport materials to the main line near Westmoreland Rd. and Illinois Ave. Engineers were faced with the great physical difficulty in bringing the line down from the high prairie, across Old Chalk Hill and into the Trinity Valley while also crossing several rail lines and highways. Where the track crossed Jefferson Blvd. and the existing Dallas/Ft.Worth Interurban Electric Railway, a three-level crossing was created. The Interurban ran parallel to Jefferson and the new Trestle, also known as the Mountain Creek Bridge, would carry it above the new railroad, all within a few feet of each other. According to the Dallas Morning News in 1930, the bridge was one of the few, if not the only, three-level crossings in the state at the time and was an expensive construction project considering the work took place in the middle of the Great Depression. Dallas county paid half the cost of sinking Jefferson Blvd., while the railroad paid the rest as well as constructing the Mountain Creek Interurban Bridge. Made of reinforced concrete, the trestle measured 12 feet wide at the top, 45 feet tall and about 400 feet long. The bridge construction engineer was W.F. Merritt of Galveston, son of Frank Merritt, chief engineer of the Gulf, Colorado & Santa Fe Railroad. Plans to demolish the bridge in 1951 proved difficult as the bridge was overly sturdy and strong. Representing only one of two remaining interurban trestles left in Dallas, the railway and Mountain Creek Interurban Bridge played a major but short-lived role in the development of passenger transport in the Dallas/Ft. Worth area. Recorded Texas Historic Landmark – 2016