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| Dallas Area Rapid Transit,
Design Consultant Services |
Project Description
The Parsons’ team was awarded a Systems Design and Construction Management Contract for DART’s Phase l expansion in February 1997. The DART Phase l contract scope included traditional systems design and construction management services where bid/build was the delivery method. The Parsons team’s design responsibilities were: catenary, traction electrification, corrosion control, signals, fare collection, systems elements (ductbanks and conduits), and communications. During the construction period, a Parsons’ construction management team was assembled to perform construction management, resident engineering, construction inspection, and change order control.
The Phase l work was completed in mid-2002 after meeting all of the client’s project schedule goals. The civil and systems designs were completed on schedule and employed new and innovative designs for the light rail expansion. Construction contracts were awarded on time, but some civil construction contractors experienced severe schedule difficulties, which impacted systems. When schedule delays threatened selected opening dates, Parsons and the client implemented systems acceleration plans to complete their efforts in support of revenue service objectives. Throughout design and construction, the Parsons team maintained schedule objectives and quality designs. The systems construction management team met the construction goals in spite of difficulties and completed one of the largest rail expansion projects in North America ahead of schedule.
The Phase l work doubled DART's six year-old, 20-mile light rail system with the December 2002 opening where DART light rail reached the Plano terminal station six months ahead of schedule.
In 2002 Parsons and Paragon Project Resources formed a Joint Venture, Dallas Systems Consultants, to compete for the Phase ll Systems Design Contract. The team successfully competed for and won this new Phase ll five-year contract including three additional one-year options. Each fiscal year of the program is budgeted, negotiated, and contracted as a separate annual work plan (AWP).
The Parsons Joint Venture team’s design and construction support responsibilities include: catenary, traction electrification, traction power substations, corrosion control, signaling/train control, fare collection, systems elements (ductbanks and conduits), communications and central supervisory control.
The Phase ll-A scope of work includes:
- Southeast Line Sections SE-1 (4.2 miles) and SE-2 (5.8 miles)
- Northwest Line Sections NW-1 (2.3 miles), NW-2 (4.5 miles), NW-3 (4.5 miles), NW-4 (5.5 miles); and Northwest Rail Operating Facility (Maintenance/Service & Inspection)
- Traction Power Substations
- Fare Collection
- Central Supervisory Control
The Phase ll-A final design is being completed and the systems construction management support services were started in 2006.
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