WISDOT Mega Projects Lessons Learned. Ryan Luck P.E. Speaker 2 Name Speaker 3 Name. Lessons Learned Owner’s perspective. To Reduce Cost over runs Schedule delays To Enhance Safety Constructability Quality. Mitchell Interchange. 27 th Street U-Ramps.
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WISDOT Mega ProjectsLessons Learned Ryan Luck P.E. Speaker 2 Name Speaker 3 Name
Lessons Learned Owner’s perspective To Reduce • Cost over runs • Schedule delays To Enhance • Safety • Constructability • Quality
Mitchell Interchange • 14 Bridges - Includes 3 tunnels • 29 Retaining Walls • 44 Sign Bridges • 7 Noise Barriers • 1,375,000 CY of Common Excavation • 10 miles of mainline and system ramps
Design Level of Complexity Correspondence: Items Logged
Lessons Learned Owner’s perspective Interface and integration is the key: • Structures (size, type, procurement) • Roadway (access, grading, drainage) • Storm sewer (depth, temp connections) • Electrical systems (aesthetics, plans) • Utilities (new vs. old, relocated, as-builts) • Preliminary stage work (season, quality) • Weather (markings, stage changes)
Program Delivery: IPD - BIM Building Information Modeling (BIM) • Collaboration • 3D Visual • Prefabrication • Improved Design Documents • Quantity extraction • Visual scheduling • Phasing Plans • Coordination • E-Turnover/Archives
Use of 3D design for integration “clash” detection • Quality Control – Tool • Clash Detection, Reveals Interface Issues • Reduce Project Risk – Cost/Schedule • CPM Schedule - Near Critical Tasks – Cascading Impact • Visualization Tool • Public, Stakeholders • Technical – • Contractor/Engineer • Utilities
3D/4D design tools Interface Emphasis • Staging – Project/Program • Temporary Roadways • Temporary drainage connections • Preliminary phase construction • Temporary Fills, Drainage, Lighting,…. • Partial Construction • Access in and out of work zone • Staging areas
Quality plans address…. • Look for and resolve Interface Issues • Within Project • Between Projects • Manage Earthwork holistically • Deliver Aggressive Schedule with consideration for weather