Highways/Bridges: Award of Merit: Manor Expressway
The Manor Expressway Toll Road Phase II project expanded a 6.2-mile section of U.S. 290 from a four-lane arterial to a 12-lane expressway in eastern Travis County. Central Texas Mobility Constructors (CTMC), a joint venture, designed and built the project.
The new expressway is a grade-separated, all-electronic toll road with three main lanes in each direction, joined by two newly constructed frontage roads on each side. The project scope included design of 32 bridges, drainage systems and preparation of permit applications.
One major challenge the construction team overcame involved opening the interim completion milestone to traffic 16 months after notice to proceed, requiring design and construction of 17 bridges, four toll structures and 25% of the main-lane paving.
The team created conceptual con-struction staging and traffic maintenance plans that coordinated lane shifts to minimize traffic disruptions and ensure safety for the traveling public. Onsite staff adjusted traffic-control operations during high peak-hour demand, and temporary ramps were built to ensure access to side streets and businesses.
The owner, Central Texas Regional Mobility Authority, implemented a green credits program for the project that required CTMC to collect at least 30 credits from a list of pre-approved methods and processes for sustainable building. The team effectively integrated six solar-powered traffic-control devices; reused pavement and topsoil; recycled fill, embankment and construction materials; applied non-treated water for dust suppression; separated landfill waste from recyclables; and reduced equipment emissions.
The team delivered the project two months ahead of schedule.
general contractor Central Texas Mobility Constructors (CTMC) LLC, a Joint Venture (Webber LLC and Texas Sterling Construction Co.), The Woodlands, Texas
Owner Central Texas Regional Mobility Authority, Austin
Lead Design Michael Baker Jr. Inc., a Unit of Michael Baker International, Arlington, Texas