R2013-01 AUTHORIZING AN AGREEMENT WITH URS CORPORATION FOR ENGINEERING SERVICES

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Exhibit A 4) Bridge to remain in place—The bridge is structurally sound, has adequate load capacity and meets the minimum width/clearance/geometric criteria to remain in place without work. Evaluations required for a deck beam bridge during the analysis process include: I) Geometric & Hydraulic Capacity ** 2) Condition of Deck Beams 3) Condition of Substructure 4) Miscellaneous Checks 5) Stage Construction Feasibility 6) Economics 7) Exterior Constraints ** Hvdraulic Analysis and Scour Evaluation IDOT requires that a hydraulic analysis be performed for superstructure replacement of for total hridpc replacement. A hydraulic analysis is not required if only a limited number of beam lines are replaced. Statewide Permit No. 12 (SWP 12) authorizes the replacement of bridges over streams under INDR's jurisdiction draining one square mile or more in urban areas. The new, structure must provide the same or greater effective waterway opening as the existing structure and an Illinois licensed professional engineer must detennine and document that the existing structure has not been the cause of demonstrable flood damage. The project cannot include any appreciable raising of the roadway approaches. For the initial structure assessment, it will be asstuned that bridges have not been the cause of demonstrable flood damage and that existing;hydraulic opening is adequate. Hydraulic evaluation for scour will be required before final design, but is not included in this scope of work. Quality Assurance and Quality Control Work wille in b accordance with the URS Quality Management System. The Bridge Condition � Reports will receive an independent technical review (iTR)performed by a qualified individual who is not the originator of the work product. The purpose of the ITR is to validate the assumptions, judgements, opinions, conclusions, and recommendations. A2