Sound Transit D755 Link Light Rail

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RoseWater GHD prepared utility, drainage and temporary erosion/sediment control designs for the five-mile long D755 segment of Sound Transit’s Link Light Rail project in Tukwila, Washington.

Services were provided for the construction bid documents and included drawings, specifications, Drainage Design Report, Utility Design Report, and quantity estimate. The project included aerial and at-grade sections of guideway, street improvements and parking lot redevelopment for a new station.

For utilities, RoseWater GHD coordinated survey and potholing requests, identified utilities to remain, protect, or relocate, interfaced with multiple permitting agencies and utility purveyors, and coordinated with structural design of column locations.  Impacted utilities included telecommunications, electrical, water, natural gas, petroleum, sanitary sewer, and storm drains. 

RoseWater GHD also applied low impact development techniques to reduce the potential number of stormwater management facilities.  One technique dispersed runoff from the elevated portion of the guideway to avoid the need for flow control and treatment.  Another technique acquired and revegetated a construction staging site to maintain the runoff rates below the threshold requiring detention.

Geotechnical

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Our services include:

Investigation

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Road Systems

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For more than 50 years, we’ve delivered innovative road systems including rehabilitation, expansion and development of new highways, complex interchanges, toll roads, bridges and tunnels. Our planners and engineers provide integrated services to plan, design, construct, maintain and manage all aspects of road corridor life.

From planning and procurement through to feasibility and investigation, and design, construction, delivery and maintenance, you’ll enjoy bespoke solutions for roads that incorporate masterplanning, funding and economic analysis, transport planning, asset management, environmental management, risk management and more.

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Structures

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We have a strong reputation, a record of accomplishment in providing world-leading technical support and advice for all areas of structural design and assessment.

Demand for GHD’s services continues to grow as the company completes and advises on a number of significant structural projects for some of the world’s tallest buildings, inlcuding Al-Bidaa Tower, Dubai Tower and the Doha Convention Center and Tower in the United Arab Emirates.

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Transportation & Logistics

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The efficient movement of goods and people is necessary for our quality of life, economic prosperity and productivity. Appropriate land use policies, pricing, regulations and demand management are needed to underpin integrated supply chains and public transport services to create a sustainable transport system.

Study transport demand, traffic patterns and patronage, review safety and investigate strategic route planning, and its impact on industry and community with GHD, to offer sustainable transport options to support future development proposals.

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