R2008-88 ACCEPTING THE BID AND AUTHORIZING A CONTRACT

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Engineering & Infrastructure Memorandum NO. 2008-45 DATE: May 22, 2008 �, TO: Honorable Mayor Osborne and City Council FROM: John A. Smith, Interim City Manager I�j� . `� �`'l � Richard G. Marley, P.E., Director of g eering Infrastructure ' Matthew C. Newell, P.E., City Engine SUBJECT: Street Restoration, City Project 08-08, Section No. 08-00808-00-FP SUMMARY RECOMMENDATION: It is recommended by staffthat the City Council approve the attached resolution awarding the contract for Street Restoration, City Project 08-08,to Dunn Company, A Division of Tyrolt, Inc., as the lowest, responsible bidder in the amount of$1,963,117.70, and that the Mayor be authorized to execute the contract and the City Clerk to attest. BACKGROUND: The Engineering Division inspects and rates approximately 1/2 ofthe City's streets on a yearly basis. The results of these inspections are input into a computer database which is used to project the future condition of the streets based on their current condition, historical condition, surface type(i.e. brick, concrete, asphalt, etc.), average daily traffic, and traffic type(i.e. trucks, cars, etc.). This data is then paired with available funding and is used as a basis to aid City Engineering in the preparation of the City's yearly street improvement program. Staffthen determines which streets need to have the surface restored or be totally reconstructed. The Street Restoration Project generally involves the placement of a 1 to 2 inch asphalt surface course on an existing paved surface. A portion ofthe existing pavement is often milled offto reduce the impact of the overlay on existing curbs and driveways. If additional structural capacity is desired in the pavement, no milling may take place prior to the overlay. The two main purposes of the Street Restoration Project are(1)to increase the useful life of a pavement in advance of its deteriorating to a condition that would require its complete reconstruction and (2)to improve the street's ride ability. The mill and overlay work requires a generally sound pavement substructure so candidate streets are not selected on a`�vorst first"basis but rather on a"life extension"basis. This year's program includes approximately 6.4 centerline miles of streets in the City. A listing of streets in this year's project is attached. The City Council received an informational memo in April describing the reason for the streets selected for this project. The project scope and specifications were prepazed by the Engineering Division and approved by the Illinois Department of Transportation(IDOT) for the use of Motor Fuel Tax funds. The project was advertised on May 8, and May 15, and bids were opened on May 22, 2008. The results ofthe letting are as follows (bid tabulation attached):