Transportation

Our transportation facilities project experience includes design for new construction, reconstruction, and rehabilitation of state highway, local, and residential roadways, and intermodal facilities. Construction alternatives that are commonly involved in our designs include: pulverizing, cement treated base, cement concrete paving, asphalt concrete paving, porous pavements, and chip seals.

Elements of these projects include coordinating survey, public involvement, right-of-way, access control, and a variety of other transportation issues. These projects have been constructed with local, WSDOT, Trans Aid, TEA-21, TIB, and private funding sources. In addition to surface designs, DCG is also experienced in providing signage, striping, and temporary traffic control plans in accordance with the Manual on Uniform Traffic Control Devices and local design standards

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Transit Base Expansion - Island County, Washington

Transit Base Expansion

As part of a multi-disciplinary team of architects and engineers, DCG is providing the civil engineering for the design of Island Transit’s bus maintenance and administrative facility. Our design includes grading and paving plans for light vehicle parking that feature pervious pavement and rain gardens for stormwater treatment and infiltration, transit coach parking and maintenance featuring stormwater collection and treatment meeting WDOE 2005 Stormwater Manual high use facility standards, a new potable water supply system, improvements to the existing fire protection water supply system.

DCG is also providing design coordination for on-site sewage system, water rights planning, site access permit, and site plan permit coordination.

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Anthes Avenue Pedestrian Improvements Project - Langley, Washington

Anthes Avenue Pedestrian Improvements Project

DCG was contracted by the City of Langley to provide design phase civil engineering services for the completion of roadway, drainage, water and pedestrian facility improvements along approximately 1,300 feet of Anthes Avenue.

The project included the completion of roadway alignment improvements, new pedestrian facilities including curb, gutter, and sidewalk, asphalt walkways, reconstruction of a transit station, installation of storm drainage collection, conveyance, and treatment facilities and the replacement of approximately 700 lineal feet of 8” water main. All work was completed in accordance with WSDOT Local Agency Guidelines. DCG also provided project approval and permitting assistance through WSDOT including coordination and oversight of a Biological Assessment and historical preservation review.

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Goss Lake Boat Ramp - Island County, Washington

Goss Lake Boat Ramp

DCG was contracted by Island County Parks to provide design phase civil engineering services for the re-development of an existing boat ramp and parking facility at Goss Lake on Whidbey Island. Design services included preparation of grading and drainage plans including a new drainage outfall system and a tiered rockery with beach access stairways.