VRX provided the preliminary design for the extension of the McKinney Avenue Trolley from McKinney Avenue to Bryan Street along Olive Street. The trolley alignment was designed in accordance with modern streetcar standards and was complicated by the restrictions of the City of Dallas Central Business District (CBD) design criteria and the desire of the City of Dallas to maintain the locations of the existing electrical and telephone manholes. The vertical alignment also provided challenges because of the built-up intersections throughout the CBD.