0, Tri-State Tollway (I-294), Roadway and Bridge Rehabilitation, 171 th Street to 159 Street, Phase II Engineering Services.

Phase II engineering services are required for the preparation of engineering studies, contract drawings, specifications and project related permits for proposed roadway, bridge rehabilitation and stth plaza improvements on the Tri-State Tollway (I-294) from 171 Street to 159 Street, MP 4.9 to MP 6.2, in Cook County, Illinois. The work generally encompasses roadway and bridge rehabilitation and shall include, but not be limited to, the following items: • Roadway design • Structural design • Interchange design • Tolling and toll plaza design • Maintenance of traffic design including that associated with local roadways • Barrier warrant analysis • Utility coordination for protection and/or relocation of utilities • Drainage design for new system installation or modification of the existing drainage system • Grading and earthwork design • Landscaping and soil erosion/sedimentation control • Roadway lighting design • ITS design • Signing and pavement marking design • Geotechnical services • Phase III support during construction The following structures are anticipated to be included in this project: • I-294 over Prairie Creek/Calumet Ditch (culvert) • Westbound I-80 Ramp over I-294 th • 167 Street over I-294 The following plazas are anticipated to be included in this project: • I-80 West Plaza 43 • I-80 East Plaza 45