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I-5 at OR214 Interchange
ODOT

In a growing area of the state, the interchange at I-5 and Highway OR214 in Woodburn, Oregon, frequently experienced failing levels of service during peak hours, in large part due to the rapid commercial development around the interchange over the previous decade. During these busy periods, freeway traffic attempting to exit I-5 would back up for more than a mile in each direction. Heavy highway traffic on OR214 also became extremely congested due to capacity issues and operational inefficiencies.

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To respond to the issue, ODOT developed a $70 million modernization project as part of its State Transportation Improvement Plan. ODOT selected Murraysmith to complete subsurface utility engineering (SUE) throughout the project corridor and to subsequently provide utility coordination for identified conflicts. The complete redesign and capacity expansion of the interchange and Highway OR214, including city street realignment and widening, had significant impacts on existing utilities located in the corridor.  These impacts represented a risk management opportunity for the construction project in terms of cost and schedule.  To manage the utility risk, designs required accurate, complete, and verified survey location data on significant utility facility structures.  Murraysmith used SUE techniques to create a 3D model and to generate two-dimensional project base mapping.  That mapping depicted known and discovered utility facilities and served as the basis for judicious physical verification of select utilities.  In using the SUE model, roadway designs incorporated 3D utility features into 3D highway designs.  Cross-sections developed anywhere within the SUE model area showed interpolated utility facility locations so that designs can avoid or optimally mitigate utility conflicts.

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Project Highlights

  • SUE model and 3D mapping
  • Utility conflict analysis and resolution
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