I-5 Marine View Drive to SR 529, WA
AAR Testing & Inspection, a SOCOTEC Company, provided construction materials testing and quality assurance services for the I-5 – Marine View Drive to SR 529 Corridor & Interchange Improvements, a major infrastructure upgrade in Everett and Marysville, Washington.
Key Information
Project Name: I-5 – Marine View Drive to SR 529 Corridor & Interchange Improvements
Client: Guy F. Atkinson Construction, LLC
Location: Everett, WA
Services Provided: Construction Materials Testing, Quality Assurance, Special Inspection
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The Challenge
Construction of a Major Corridor and Interchange Upgrade with Complex Infrastructure
The I‑5 – Marine View Drive to SR 529 Corridor & Interchange Improvements project was developed to enhance northbound I‑5 traffic flow and improve access between Marysville and I‑5 through a redesigned SR 529 interchange.
The project required construction across 2.33 miles and involved significant infrastructure elements.
Project quantities and key metrics included:
- 2 New Bridge Structures
- 2 New Sign Structures, 1 variable message sign, 2 new ramp meters
- 5 Acre of Roadside Restoration
- 7000 SF of Retaining Walls
- 2.33 miles of stormwater drainage conveyance
- Approximately 218,000 cubic yards of earthwork excavation and embankment
- Approximately 35,000 tons of HMA
- Approximately 200 cubic yards of Concrete Pave
A key challenge was the coordination of multiple complex construction activities, including bridge construction, roadway embankment, stormwater systems installation, and phased construction operations, all while maintaining traffic flow and meeting strict quality standards.
The Solution
Integrated Construction Materials Testing and Quality Assurance Services
AAR Testing & Inspection, a SOCOTEC Company, provided comprehensive construction materials testing and quality assurance services to support safe and compliant construction throughout all phases of the project.
Core Services Provided:
- Construction materials testing for pavement, structural concrete, and soils
- Quality inspections during bridge construction and roadway embankment
- QA/QC oversight during phased construction
- Field density testing, grading verification, and compaction monitoring
- Inspection coverage for stormwater systems, drainage structures, and subgrade preparation
- Daily coordination with contractors leads and WSDOT inspectors
- Verification of geometry, tolerances, and elevations for roadway construction
- Documentation and reporting aligned with refined Design-Build processes
AAR Testing & Inspection, a SOCOTEC Company, provided comprehensive construction materials testing and quality assurance services to support safe and compliant construction throughout all phases of the project.
Core Services Provided:
- Construction materials testing for pavement, structural concrete, and soils
- Quality inspections during bridge construction and roadway embankment
- QA/QC oversight during phased construction
- Field density testing, grading verification, and compaction monitoring
- Inspection coverage for stormwater systems, drainage structures, and subgrade preparation
- Daily coordination with contractors leads and WSDOT inspectors
- Verification of geometry, tolerances, and elevations for roadway construction
- Documentation and reporting aligned with refined Design-Build processes
The Results
A Modern, High-Capacity Corridor and Interchange System
Through coordinated construction materials testing and quality assurance services, AAR Testing & Inspection, a SOCOTEC Company, supported the successful delivery of a major corridor improvement designed to enhance traffic flow and regional connectivity.
AAR’s Role & Value
Building on the Design-Build experience established during the SR-520 program, AAR Testing & Inspection supported the I-5 – Marine View Drive to SR 529 Corridor & Interchange Improvements Project with an integrated, proactive quality oversight approach. Early alignment of inspection staffing, reporting, and coordination allowed AAR to operate efficiently.
AAR provided construction materials testing and quality assurance services during critical phases of work. By applying proven Design-Build inspection practices, AAR helped maintain inspection continuity, support schedule reliability, and reduce rework risk while reinforcing confidence in construction outcomes.
Project Features & Qualities:
- Improved access: A completed SR 529 interchange, with new connections between Marysville and I-5.
- Congestion relief: A new HOV lane on northbound I-5 will reduce backups and improve traffic flow from Everett to Marysville on both weekdays and weekends.
- HOV lane compatibility and cost: A new HOV lane is compatible with the existing HOV system between Tacoma and Everett and requires the lowest capital and operating costs.
- Bikes and pedestrians: Bike and pedestrian access maintained on SR 529.
- Restore fish habitat: To mitigate this project, WSDOT restored about 12.5 acres of saltwater marsh habitat.
Key Outcomes:
- Verified performance of bridge structures and roadway embankment systems
- Quality assurance for structural materials and construction components
- Compliance with design requirements and construction standards
- Delivery of a durable, high-capacity transportation corridor
