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OUR SERVICES

CIVIL ENGINEERING

Improving quality of life and spurring economic development are at the core of everything we do. We are passionate about local transportation design and delivering on every benefit.

LAND SURVEYING

From land acquisition through to construction, our land surveyors will keep your transportation project moving in the right direction.

LANDSCAPE ARCHITECTURE

Urban streets are being redefined to capitalize on their ability to improve the environment, boost the local economy and increase quality of life. Our streetscape designs bring added value to your roadway projects by getting people out of their cars and into the community.

CONSTRUCTION MANAGEMENT & INSPECTION

Our construction management & inspection service was built on transportation projects, so we're qualified to oversee projects of just about any scale, large or small. Our team will handle the construction details, giving you peace of mind.

OUR EXPERTISE

Complete streets

Complete Streets

Our Complete Streets approach turns roadways into multi-modal facilities that are also welcoming and accessible to pedestrians, cyclists, and transit riders. We can make your street project a community asset with ongoing benefits that you can be proud of.

Roundabouts

Roundabouts

Roundabouts are gaining popularity in the U.S., and MacKay Sposito is a regional expert in roundabout design. From standard single-lane to multiple lanes with separated bicycle facilities, our experienced team can make your roundabout project a solid reality, even in challenging topography.

Low impact development

Low Impact Development

We believe that nature provides the best models for managing rainfall, so we follow its lead when designing stormwater solutions. Filtering, infiltrating and detaining runoff at its source greatly lessens environmental impacts while reducing your infrastructure costs.

Practical solutions

Practical Solutions

Practical solutions are essential for achieving the best results with limited funds. MacKay Sposito identifies the specific problem and then chooses the most effective solution. We'll help you get the best value for your budget.

A SNAPSHOT OF OUR WORK

Washington County OR

SW Boones Ferry Road – Day Road to Norwood Road


Washington County

Project Highlights:

  • Improvements to an existing street, widening it to a 3-lane section
  • Designed as a Complete Street to accommodate multi-modal transportation
  • Improvements for approximately 5,000 lineal feet

Wilsonville OR

SW Boones Ferry Road – Wilsonville Road to Bailey Street


City of Wilsonville

Project Highlights:

  • Improvements to the only traffic route through the “Old Town” business core
  • Reconstruction of the east half of the street
  • Low impact development stormwater rain gardens and pervious pavers utilized
  • New mid-block lighted pedestrian crossing

Kennewick WA

Hildebrand Roundabout


City of Kennewick

Project Highlights:

  • New roundabout design
  • Challenging design due to steep cross-slope
  • Intersection of Hildebrand and US-395 also redesigned
  • WSDOT intersection approval received

Kennewick WA

Clearwater Avenue – Safe Clearwater


City of Kennewick

Project Highlights:

  • Planned and led public involvement and stakeholder outreach for proposed improvements to a 5.4-mile arterial corridor
  • Prepared and maintained the project website
  • Facilitated three (3) public open houses, including a virtual open house

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