I-75 / University Drive: An Interchange Under Pressure Becomes a Diamond
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John Katers, PE and Pat Wingate, PE present I-75 / University Drive: An Interchange Under Pressure Becomes a Diamond at the 2016 Ohio Transportation Engineering Conference.
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I-75 / University Drive: An Interchange Under Pressure Becomes a Diamond
- 1. I-75 / University Drive: An Interchange Under Pressure Becomes a Diamond OTEC 2016 John Katers, PE and Pat Wingate, PE OHM Advisors
- 2. I-75/University DDI • Background and History • Need for Improvement • Act of God • DDI Concept • Design Build • Branding
- 3. 23,000 residents 100,000 daytime population
- 5. City of Auburn Hills DDI The Palace of Auburn Hills Oakland University Chrysler Tech Center
- 7. Operation Problems: ¥ Bottleneck ¥ WB to SB ¥ No Ped facilities ¥ Chrysler ramps 1990s - 2000s: • Chrysler • Auburn Hills tech park • Oakland University • Others
- 8. Operational Problem: Chrysler NB C-D road ends
- 9. Solution: Reconstruct Parclo • Late 90s • Impacts • ROW • Cost
- 10. Reconstruct Parclo: • Deferred in 2005 • Pavement/bridge conditions • Operational issues Now What?
- 11. 2005 - 2008 City of Auburn Hills • Frustration • Poor Operations • Ugly Front Door • Economic Barrier Other Solutions?
- 12. Developing Options • SPUI • Modified Parclo • Roundabouts • DDI
- 13. Developing Options • SPUI: Bridge deck cost due to skew • Modified Parclo • Roundabouts • DDI
- 14. Developing Options • SPUI: Bridge deck cost due to skew • Modified Parclo: Highest cost and most ROW impacts • Roundabouts • DDI
- 15. Developing Options • Roundabouts: Lowest Cost ($12 million) and LOS B
- 16. Developing Options • SPUI: Bridge deck cost due to skew • Modified Parclo: Highest cost and most ROW impacts • Roundabouts: Viable option? • DDI
- 17. Developing Options • SPUI: Bridge deck cost due to skew • Modified Parclo: Highest cost and most ROW needs • Roundabouts: Viable option? • DDI: Innovative, no ROW, moderate cost, LOS B/C
- 18. Developing the DDI Option • Coordination with Missouri DOT • Developed understanding of the DDI • Worked on traffic models • Concluded DDI was a viable option • Presented to the City of Auburn Hills • DDI fit with Innovation/Hi Tech brand
- 19. A Call for Action 2009: DDI Option is Pursued by the City of Auburn Hills
- 20. A Call for Action 2009 - 2013: • Auburn Hills aggressively pursues funding • MDOT program • Legislators • Regional coalition • Bring the $$$ • Pursue TIGER Grant funding US DOT
- 21. For 4 years, we talked to every leader we could find in government and business about this project. -Stephanie Carroll, City of Auburn Hills
- 22. A turn of events... • City of AH streetscape project • University Drive overlay • Bridge deck overlay • Bridge Load Rating
- 23. Polar Vortex of 2014 •Severe cracks in bridge beams • Emergency closure • Temp supports Detroit Free Press
- 24. Go Time?! MDOT priority. Funding sources: • $8M savings freeway project • $4M from City of Auburn Hills • $2M from TEDF • $4M from Legislature • $0.5M from TAP • Looked at design phase
- 25. Go Time!! Design-Build: • Owner's rep team
- 26. Go Time!! Design-Build: • Owner's rep team • RFP Phase (2014): Prelim design and bidding
- 27. Go Time!! Design-Build: • Owner's rep team • RFP Phase (2014): Prelim design and bidding • Contractor Design Phase (2015): Reviewer
- 28. Go Time!! Key Elements: ¥ ROW ¥ Traffic Modeling ¥ Geometry ¥ Challenges...
- 29. Geometric Challenges • Queue sensitivity on west side • Manage the curvature • Avoid wetlands and poor soils
- 30. Challenges Queue sensitivity on west side: • PM Peak • On-ramp to SB I-75 • Merging
- 31. Challenges • X-over locations • Minimize lanes on bridge • Merge for SB on-ramp • Opdyke Rd Queue sensitivity on west side (PM) Preliminary Design
- 32. Challenges • 44 degree skewed bridge • Lane discipline • Driver expectation • Speed control Manage the curvature Preliminary Design
- 33. Challenges • Wetlands in SE and NE • Soft clay and peat in SW Avoid poor soils and wetlands Preliminary Design
- 34. Challenges • 26 degree skewed bridge • Lowers bridge span • Less wall and fencing • $1 million in cost savings! Contractor’s Initial Geometry
- 35. Contractor’s Initial Geometry Challenges Preliminary Design Queues on west side Avoid wetlands and bad soils • Curvature and driver expectation concerns
- 36. Challenges Queues on west side Avoid wetlands and bad soils • Curvature and driver expectation concerns Contractor’s Initial Geometry
- 37. • Increase distance from x- overs to bridge • Increase tangent lengths • Promote lane discipline Challenges Modifications
- 39. A Brand • Joint effort: Auburn Hills and Oakland U • An iconic gateway • Elevate the quality of the arrival experience
- 40. A Brand • An identity beyond an exit number • A sense of place • You have arrived!
- 41. A Brand • Engine for economic growth • Reinvestment in land use • High-tech research and college town
- 42. • First of its kind in Michigan A Brand
- 43. An Identity
- 44. Iconic Gateway
- 45. Minimal Delay
- 47. Economic Growth
- 48. Innovation