Civil Engineering

In support of the Fullerton Transportation Center Specific Plan and Environmental Impact Report, Huitt-Zollars was retained to complete technical design studies and reports to support the public/private joint venture in the redevelopment of Fullerton’s Transportation Center. The 40-acre redevelopment area includes a number of new structures comprised of mixed-use residential, commercial, and retail businesses, including above and below ground parking garages. The project also includes new landscaping, roadway improvements, park areas, and renovations to the existing station.

Huitt-Zollars was responsible for concept and development plans of street and block, water, wastewater, drainage, electrical duct banks, and franchise utilities for this 75-acre master planned multi-family and commercial retail community. The community was developed in multiple phases and included the construction of an office tower, six four-story apartment buildings with ground floor retail, and one eight-story apartment building.

The TRE Commuter Rail System extends along the existing 34-mile Rock Island Railroad corridor. Planning, development, and operation of the commuter rail service is jointly sponsored by Dallas Area Rapid Transit (DART) and FWTA. The initial 11-mile service between downtown Dallas and the City of Irving was planned and designed by Huitt-Zollars for DART. This starter system employs self-propelled DMV cars and has four stations. The FWTA retained Huitt-Zollars to plan and design a 24-mile extension from Irving to downtown Fort Worth.

Huitt-Zollars conducted route alignment, engineering, patronage, funding, environmental, systems, and vehicle technology studies for two extensions to the existing trolley system. The northerly extension brings the system to the existing CityPlace office and commercial development and its station for the Dallas Area Rapid Transit (DART) LRT rail system.

Huitt-Zollars to prepared the final design for Line Section NW-3. As a portion of DART’s Northwest Corridor, NW-3 is approximately 5.5 miles in length and includes three miles at-grade and 2.5 miles of aerial guideway, two elevated stations and one at-grade station, a railroad yard relocation track which leads into the maintenance facility, and track work for future Irving Line connections. Key challenges included numerous street closures, cross street reconstructions, traffic control, major utility relocations, and coordination with highway projects in the corridors.

Huitt-Zollars served as the General Engineering Consultant for facilities design and construction. The program’s overall cost exceeded $1 billion and included a 21‑mile LRT System, an 11-mile commuter rail system, plus numerous transit centers for improved bus and express bus services. The 21-mile LRT system was developed within railroad, electric transmission line, and roadway rights‑of‑way. Key features along the corridor consist of a 3.5-mile twin bore transit tunnel located below US-75; a transit mall in downtown Dallas; a 2,000-LF bridge across the Trinity River; and two extended grade

Huitt-Zollars provided engineering services through an Indefinite Delivery Contract.

Huitt-Zollars prepared improvement plans for nine bus stop turnouts located in the county areas around Palmdale and Santa Clarita. The project was administered through Los Angeles County Department of Public Works Road Construction Program. The overall project included design survey, utility notifications, preparation of improvement plans and construction quantity, and cost estimates. The design survey and improvement plans required a 30-day preparation period. The design phase included utility research, notifications and collection of utility maps for each bus stop location.

Huitt-Zollars provided professional design services to construct a $2.5 million end-of-line park and ride facility on the northwest corner of 40th Street and Pecos Road. The work included project design, construction documents, permitting, and estimates of probable construction cost for civil, drainage, landscape, utility, and transit center improvements. The facility will encompass approximately 15 acres, with initial design for 500 parking spaces, and rough grading and utilities for a total of 1,000 spaces.

Huitt-Zollars was selected to provide final civil/structural and architectural design and post-design construction services as part of a design-build team. The project extends approximately 1.15 miles from US-59 on the east to IH-45 on the west, and includes six LRT station platforms.