The arches will stand 328 feet tall and stretch the 1,311 feet of the bridge they support. --Dallas Horshoe / Texas Department of Transportation

The first of two arches has just been completed on Dallas’s Margaret McDermott Bridge, part of the $798-million Dallas Horseshoe Project that seeks to reduce traffic and enhance accessibility to downtown Dallas, Arch Daily reported Aug. 25.

Time-lapse footage shows the progress of the arch construction on the eastbound side of the bridge, as well as the final piece, the top of the arch, being lifted into place on Aug. 22.

Tampa Steel Erecting fabricated the arch segments