CONSULTING ENGINEERS REPORT Toll Highway Senior Revenue Bonds 2020 Series A November 20, 2020 Consulting Engineers Report November 20, 2020 CONSULTING ENGINEERS REPORT 1 1 Illinois Tollway History and Capital Program Background ............................. 1 1.1 Prior Legislative Directives .............................................................................................. 1 1.2 Illinois Tollway Capital Projects & Programs Overview .................................................... 2 1.2.1 Congestion-Relief Program: 2004 - 2016 ................................................................................. 2 1.2.2 Move Illinois: The Illinois Tollway Driving the Future .............................................................. 3 1.2.3 Illinois Tollway and the COVID Pandemic ................................................................................ 3 2 Move Illinois: The Illinois Tollway Driving the Future ..................................... 4 2.1 2 Jane Addams Memorial Tollway (I-90) .......................................................................... 7 2.1.1 Kennedy Expressway to Elgin Toll Plaza – Reconstruct / Add Lane ......................................... 7 2.1.2 Elgin Toll Plaza to IL Route 47 – Reconstruct / Add Lane ......................................................... 7 2.1.3 IL Route 47 to I-39 – Reconstruct / Add Lane .......................................................................... 8 2.1.4 Kennedy Expressway to I-39 – Transit Accommodation .......................................................... 8 2.1.5 Kennedy Expressway to I-39 – ROW Acquisition ..................................................................... 9 2.1.6 Kennedy Expressway to I-39 – Utility and Fiber Optic Relocation ........................................... 9 2.1.7 Kennedy Expressway to I-39 – Bridge and Ramp Repairs ........................................................ 9 2.2 Tri-State Tollway (I-94/I-294/I-80) .................................................................................. 10 2.2.1 95th Street to Balmoral Avenue – Reconstruct ...................................................................... 10 2.2.2 Edens Spur – Reconstruct ...................................................................................................... 10 2.2.3 Bishop Ford Expressway to Russell Road – Bridge and Ramp Repairs ................................... 11 2.2.4 Bishop Ford Expressway to Russell Road – ROW Acquisition ................................................ 11 2.2.5 Bishop Ford Expressway to Russell Road – Utility and Fiber Optic Relocation ...................... 12 2.3 Veterans Memorial Tollway (I-355) ................................................................................ 12 2.3.1 I-55 to Boughton Road, Collector-Distributor Roads, North Avenue to Army Trail Road – Mill, Patch and Overlay ....................................................................................................................... 12 2.3.2 I-55 to Army Trail Road – Mill, Patch and Overlay ................................................................. 13 2.3.3 I-80 to Army Trail Road – Bridge and Ramp Repairs .............................................................. 13 2.3.4 I-80 to Army Trail Road – ROW Acquisition ........................................................................... 14 2.3.5 I-80 to Army Trail Road – Utility and Fiber Optic Relocation ................................................. 14 2.4 Reagan Memorial Tollway (I-88) .................................................................................... 15 2.4.1 York Road to I-290 - Reconstruct ........................................................................................... 15 Consulting Engineers Report November 20, 2020 2.4.2 East-West Connector Road Between I-294 and I-88 – Reconstruct ...................................... 15 2.4.3 IL Route 251 to IL Route 56 – Mill, Patch and Overlay ........................................................... 16 2.4.4 Aurora Toll Plaza (61) to IL Route 59 – Mill, Patch and Overlay ............................................ 16 2.4.5 U.S. Route 30 to I-290 – Bridge and Ramp Repairs ................................................................ 17 2.4.6 U.S. Route 30 to I-290 – ROW Acquisition ............................................................................. 17 2.4.7 U.S. Route 30 to I-290 – Utility and Fiber Optic Relocation ................................................... 17 2.5 I-294 / I-57 Interchange ................................................................................................. 18 2.5.1 Ramps to/from Memphis & 147th Street Ramps ................................................................... 18 2.5.2 Tri-State Tollway (I-294) / I-57 Interchange – New Ramps and Structures ........................... 18 2.5.3 Tri-State Tollway (I-294) / I-57 Interchange – ROW Acquisition ............................................ 18 2.5.4 Tri-State Tollway (I-294) / I-57 Interchange – Utility and Fiber Optic Relocation ................. 19 2.6 Elgin O’Hare Western Access Project, IL 390 and I-490 ................................................ 19 2.6.1 EOWA: IL 390 From US 20 to IL 83 – Roadway and Bridge Construction .............................. 19 2.6.2 I-490 South Leg From I-294 to Western Access Interchange – New Roadway Construction ................................................................................................................................................ 20 2.6.3 I-490 North Leg from Western Access Interchange to I-90 – New Roadway Construction ... 21 2.7 Planning for Other Projects ............................................................................................ 21 2.7.1 Planning for Other Projects .................................................................................................... 21 3 Systemwide Improvements and Initiatives..................................................... 22 3.1 Systemwide Maintenance Facilities ............................................................................... 22 3.2 Systemwide Improvements ............................................................................................ 23 3.2.1 Infrastructure Renewal – Bridge, Pavement, Drainage and Safety Appurtenance Repairs ... 23 3.2.2 Infrastructure Enhancements – Business Systems and Toll Collection Upgrades ................. 23 3.2.3 Infrastructure Enhancements – Information Technology and Intelligent Transportation System Upgrades ................................................................................................................................ 23 3.2.4 Non-Roadway Projects ........................................................................................................... 24 3.2.5 Access Expansion – Service Interchanges .............................................................................. 24 3.2.6 Toll Collection Upgrades – Plaza Modifications for Electronic Tolling Upgrades .................. 24 3.2.7 Program Support .................................................................................................................... 25 3.2.8 Utility and Fiber Optic Relocation .......................................................................................... 25 3.2.9 Systemwide Right-of-Way ...................................................................................................... 26 3.3 Intelligent Transportation System .................................................................................. 26 i Consulting Engineers Report November 20, 2020 3.4 Environmental Initiatives ................................................................................................ 29 3.4.1 Expanded Use of Brine for Roadway De-icing ........................................................................ 29 3.4.2 Enhanced Environmental Inspections .................................................................................... 30 3.4.3 Invasives to Energy Research Program .................................................................................. 30 3.4.4 Landscape and Tree Planting Initiative .................................................................................. 31 3.4.5 NPDES MS4 Inspection and Annual Reporting ....................................................................... 31 3.4.6 INVEST Program ..................................................................................................................... 32 3.4.7 Stormwater Management ...................................................................................................... 33 3.5 System Growth .............................................................................................................. 34 4 Condition of the Illinois Tollway System ........................................................ 35 4.1 Transportation Asset Management System ................................................................... 36 4.2 Pavement ...................................................................................................................... 36 4.2.1 Visual Inspection .................................................................................................................... 36 4.2.2 Pavement Structural Evaluation ............................................................................................ 36 4.2.3 Surface Evaluation.................................................................................................................