ST3 Cost Estimate
Program Management and Controls
Triunity is the prime consultant leading an independent cost estimate assessment and methodology review for the ST3 plan – the expansion of Sound Transit’s Link Light Rail and Bus Rapid Transit system. Our project controls/cost estimating experts are currently providing review, analysis, and recommendations of the original, intermediate, and current ST3 plan cost estimates and oversee all specialty estimators for the following projects: West Seattle and Ballard Link Extensions (WSBLE), Tacoma Dome Link Extension (TDLE), Operations and Maintenance Facility – South (OMFS), Bus Rapid Transit: I-405, SR-522, and Bus Base North (BBN). Analysis included in-depth review of various cost estimates and potential alignments for these major extensions, including above, at-grade, and below grade options.