mdot actt workshop

MDOT ACTT Workshop

StructuresI-94 From I-96 to East of Connor

Participants• Steve Stroh, URS Corp• Vijay Chandra, Parson Brinckerhoff• Raj Ailaney, FHWA• Gary Jakovich, FHWA• Jon Nekritz, FHWA• Phil Grotenhuis, MDOT• Matt Chynoweth, MDOT• Terry Lavoy, MDOT• Wesley King, MDOT

Shallow Structure Types• Channel Bridge• Cable-Stayed Bridge with slab superstructure• Tied-Arch Bridge with slab superstructure• “Conventional beam bridge with integral

supports”• Segmental voided slab

Pre-fabrication• Segmental Concrete Superstructure• Pre-cast piers• Pre-cast abutments• Pre-cast deck panels• Pre-cast bridge barrier• Temporary Bridges Bailey/Acrow

ElementsSystems

ElementsSystems

High Performance Materials• Polymer Asphalt• High Performance concrete• High Performance steel• Self-Consolidating Concrete• High Strength Concrete• Initial Overlays

Retaining Walls• Remove retaining walls, purchase additional

Right of Way (ROW), Lay slope back at 3:1 • Soldier Pile, Soil Nailed or Secant Walls

Service Drive Expansion• Near Wayne State University (WSU)

parking garage expand service drive over slope.

Foundations for Interchanges• Single/mono shaft• Large diameter closed in steel pipe pile• Post grouted shaft

Railway Crossings• Construct temporary railroad bridges as

necessary• Diverge rail traffic onto one bridge in areas

with multiple tracks• Roll in pre-fabricated bridge over short

closure period• Edge girder floor beam system

Interchange Construction Staging• Build new ramps before eliminating

movements• Construction Planner

• Manage sequence of construction for whole interchange

• Ramp Bridges• Segmental Box• Steel Box/Plate

• Temporary Structures to move traffic

Advanced Contracting• Identify bridges for early

construction/replacement due to poor condition• Advanced relocation of utilities

Design to Minimize Future Maintenance• Eliminating expansion joints, design for

continuity• Minimize number of bearings

Erection Methods• Self Propelled Modular Transport (SPMT) • Roll In• High capacity cranes• Erection Gantry