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a;3 INDIAN RIVER COUNTY, FLORIDA MEMORANDUM TO: Jason E. Brown, County Administrator THROUGH: Richard B. Szpyrka, P.E., P.E., Public Works Director James Ennis, P.E., Assistant Public Works Director FROM: Kirstin Leiendecker, P.E., Roadway Production Manager SUBJECT: Change Order No. 2 53rd Street over Lateral A Canal Bridge Widening IRC -1505 DATE: April 4, 2022 DESCRIPTION AND CONDITIONS On April 6, 2021 the Board of County Commissioners awarded Bid No. 2021018 to Halley Engineering Contractors, Inc. (HEC) for roadway improvements for 66th Avenue from 49th Street to 69th Street in the amount of $32,728,137.85. A notice to proceed was issued on June 1, 2021 with a contract time of 750 days to final completion. On September 21, 2021 the Board of County Commissioners approved Change Order No. 1 to the Contract which reduced the Contract amount by $55,000.00 to $32,673,137.85 and allowed for the redesign and construction of a modified bridge design for the 66th Avenue Bridge over North Relief Canal. Additionally, County staff requested that Halley Engineering Contractors, Inc., provide a proposal to construct a 5 -lane bridge section which would be necessary in the near future as part of our long-range planning program. This design update to widen the bridge was previously approved by the Board to accommodate future anticipated traffic volumes along 53rd Street due to anticipated development. The original bid cost for the 3 -lane bridge structure is $1,025,900.50. Halley Engineering Contractors, Inc. (HEC) provided a proposal to construct the widened 5 -lane bridge structure, using the FDOT Standard Florida Slab Beam (FSB) System design meeting 2021 Bridge Design Standards, for $1,867,717.85. This represents an increase of $841,817.35 to the cost of the contract. Furthermore, if the design had not been modified to an FSB -style structure and the original Post Tensioned Prestress Bridge design was required to be constructed it would have resulted in an additional cost of $130,000.00, at current market rates. In addition to the cost increase associated with the construction of the modified design, an additional 60 -days was requested for extended procurement and construction times for the larger structure. Change Order No. 2 is proposed to compensate the Contractor for a modified bridge design C:\Users\ufc-prod\AppData\Local\Temp\BCL Technologies\easyPDF 8\@BCL@F4245F56\@BCL@F4245F56.178