I-5: Elkhead Road to OR 126: Knowles Creek Bridges

This $43 million design-build highway project consisted of the design and replacement of six bridges along with the repair of one other. The bridges span across live railroad tracks, county roads, and environmentally sensitive water ways in multiple work zones along the I-5 corridor and along Highway 126.

As the design-builder, Slayden Construction was responsible for obtaining all permits and clearances for the seven bridge sites. Also included was obtaining a right-of-entry permit and establishing and maintaining a Construction and Maintenance Agreement with the railroad. On this project, coordination with the railroad started back on day one of the design process. We were in charge of addressing the railroad’s needs, both during construction and their future needs in the design of the permanent structure. The coordination continued into construction with constant communication in regards to activities that were going on and the railroad flagger needs.

The environmental aspects of this project also created unique challenges. There were endangered species in the area, as well as, in the waterways we were working over. Special consideration was given throughout design, as well as, construction methods. These considerations presented challenges in both permitting and in the planning and sequencing of work.

At all bridge sites, traffic control solutions were designed and implemented to minimize the effect to the traveling public. On the Highway 126 sites, detour bridges were built and traffic continued to travel on them while the construction of the new structure took place. On the I-5 corridor sites, staged construction techniques were used to further decrease the impact to mobility throughout the corridor.

Total Project Value: $43.2 million

Slayden Construction Role: Design-Build General Contractor

Owner: Oregon Department of Transportation

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Management Skills that Help Reduce Costs

"We have been impressed with their management skills, starting with preconstruction where they performed value engineering that reduced costs, lead procurement with detailed bid packages that brought our project qualified subcontractors and manufacturers and produced a schedule that would get our project completed on time. Slayden has continued this into the construction phase by managing the work to stay on schedule."

Randy Rosane, P.E., Project Manager with Water Environmental Services

Positive and Goal-Driven

"Slayden’s positive approach and eagerness to achieve the project goals was a tremendous benefit and a driving force to the project and its success. Slayden achieved all minority, woman, and emerging small business subcontracting goals and also met the 20% Workforce Training and Hiring Program’s apprenticeship requirements. They also held their subcontractors to these same goals and requirements."

Michelle Lostra, P.E., City of Portland, Water Bureau

Strong Communication and Community Outreach

"I feel confident in recommending Slayden for their approach to neighborhood outreach and desire to work with our community outreach and communications team to help keep neighbors informed, resolve issues and mitigate issues."

Katy Fulton, Lake Oswego – Tigard Water Partnership

Efficient and Safe

"I enjoyed their management style, which was efficient while paying attention to cost. This was done without sacrificing safety. I would welcome the chance to work with them in the future."

Daniel G Shepard, Manager, Grants Pass Irrigation District

Positive Relationship Builders

"Slayden has met all conditions of approval and does a great job of keeping the neighborhood informed. Slayden works diligently to accommodate the neighboring citizens. In several cases, Slayden has gone above and beyond the conditions of approval in an effort to solve citizen’s issues. This has led to the development of relationships between the project team and the neighborhood, which have contributed to the project in a positive manner."

Thomas Lebo, Construction Manager, Brown and Caldwell

Respectful, Courteous, and Safe

"Slayden Construction is true to their word, without a doubt I would hire them for future projects. All of the employees that worked at the plant were respectful, courteous, and preformed the duties at hand in a safe manner. I can’t say enough good things about Slayden, as you can see in this evaluation. Surround yourself with good people and it makes you look good. And it doesn’t get any better than Slayden Construction."

William Schmittle, City of Hermiston