SCL conducted independent Quality Assurance Oversight services for Central
Puget Sound Regional Transit Authority’s Capital Projects in design and construction. SCL
audited design deliverables at major milestones in the project Plan (60, 90 100 completion).
Project included structures, off ramps, interstate highway, arterial roads, retaining walls,
and bridges.
Project Background
The project provided for improvements of I-5 in south King County, MP 143.25 to MP 144.74
by constructing a direct access ramp from S 317th, the connection from Federal Way Transit
Center and Park and Ride Facility into the HOV lanes of I-5. The project would also add HOV
lanes and improve positions of I-5 within project limits. The work included clearing and
grubbing, grading, drainage, storm sewers, asphalt and concrete pavement removal. Paving
with hot mix asphalt and concrete, dowel bar retrofit, grinding, construction of structural
earth and reinforced concrete retaining walls, construction of S 317th St. under crossing,
widening of bridge 5/506E, erosion control and planting, curb, curb and gutter, permanent
signing, landscaping, permanent and temporary illumination, traffic signals, ITS, traffic
control, and other related improvements.
Scope of Work
- Project Management
- Quality Assurance Audits
- Report production