Project Details

Ridgefield Interchange at I-5 | LaCenter, WA

  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange Roundabout
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange
  • ilani Casino I5 Interchange

Situation

The Cowlitz Casino & Entertainment Resort includes 354,000 square feet of mixed-use development on 152 acres for gaming, restaurants, entertainment, retail spaces, and parking for 3,000 cars. The key element to off-site infrastructure was the removal and replacement of the La Center interchange over Interstate 5.

Solution

Removing and replacing the existing La Center I-5 interchange was a massive undertaking, requiring demolition of the existing bridge and creation of a new bridge spanning I-5 with new on and off ramps. Additionally, two new roundabouts were built, consisting of 45,500 square feet of concrete pavement.

Overall, the project required:

  • 75,000 cubic yards of earthwork
  • 48,000 tons of aggregate base course
  • 12,000 tons of AC paving
  • 9,000 linear feet of storm drain
  • 3,500 linear feet of guardrail
  • 20,500 square feet of new sidewalk
  • 4,000 square feet of new retaining walls

Notable

The project was so large, planning for it took over 10 years. Construction was completed in less than two years.

Project Details

Region: Oregon
Client: Swinerton
Market: Transportation
Sub-Market: Bridges / Structures
Value: $20 million
Completed: 2017
Services: Demolition / Site Clearing Concrete Overlays / AC Paving Mass Earthwork / Excavation Wet Utilities Water Treatment Sewer Treatment

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