R2012-91 ACCEPTING THE BID AND AUTHORIZING A CONTRACT FOR BRIDGE REPAIRS PROJECT

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Country Club Bridge over Lake Decatur The most recent inspection determined that significant corrosion was present at the south ends of the two outside beams. Follow-up inspections were also performed by the Illinois Department of Transportation(IDOT) to determine if load restrictions were necessary. IDOT requested that temporary shoring be placed under the bridge until repairs could be made. The project will install metal plates to strengthen the corroded beams thereby restoring full capacity to the structure. The repairs will require Country Club Road to be closed for approximately 2 weeks. Garfield Bridge over 22nd Street An inspection in 2010 recommended that the following repairs be completed: 1. Repair erosion on the northwest corner of the structure near the abutment. 2. Replace the failed slope wall on the west side of the structure. 3. Replace a portion of the concrete deck near the east side of the bridge that had deteriorated. This project will address item 3 by replacing a deteriorated section of the bridge deck. City crews will perform the erosion repairs identified as item 1. Item 2 will be deferred to a future project that will replace the entire deck currently planned to be completed in 5 years. Bid Results The project scope and specifications were prepared by Homer L. Chastain & Associates, LLP and approved by City staff and the Illinois Department of Transportation (IDOT) for the use of Motor Fuel Tax funds. The project was advertised on March 21, and 28, 2012, in the Decatur Tribune and March 22, and 29, 2012 by IDOT and bids were opened on April 5, 2012. The results of the letting are as follows (bid tabulation attached): Compared to Engineer's Bidder Bid Price Est.Over(-Under) Halverson Construction Company, Inc. $48,105.00 58.37% Illinois Valley Paving, a Division of United Contractors $77,710.90 155.84% Midwest, Inc. Engineer's Estimate $30,375.00 -------- Halverson Construction Company, Inc. provided the low bid and has successfully completed other projects of this type for the City. The low bid amount is significantly higher than the engineer's estimate, generally due to the low volume of work and the complexity of the repairs needed on the Country Club Bridge. The outer beams of the bridge are currently supported by temporary timbers and the repair will require working around the varying level of the lake. It is likely that rebidding the project will not result in a better price for the work. A letter of recommendation from Homer L. Chastain & Associates, LLP is attached. Page 12