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Page 3 of 5 <br />Reference: Brian Drive, Culvert Bridge 02J04 Posting Analysis <br /> <br />Table 1: Load Rating Summary <br />Option 1 - Option 2 - Option 3 - †ŲƂijŗŏϫͰϫАϫ <br />Brian Drive Culvert Existing <br />Asphalt Concrete Liner Replacement <br />Pavement Type Asphalt Asphalt Concrete Asphalt Asphalt <br />Total Roadway Section <br />Depth 1.75 ft 2.583 ft 2.083 ft 1.75 ft 1.75 ft <br />Pavement Thickness 0.50 ft 0.50 ft 0.67 ft 0.50 ft 0.50 ft <br />Aggregate Fill 1.25 ft 2.08 ft 1.42 ft 1.25 ft 1.25 ft <br />Grade Raise* - 10 in 4 in - - <br />Rating Summary <br />Truck Type Rating Factor <br />TBD** TBD** <br /> Design - HL-93 (Inventory) 0.31 0.88 0.88 <br />TBD** TBD** <br />Design - HL-93 (Operating) 0.37 1.08 1.08 <br />TBD** TBD** <br />Minimum of MN Legal Trucks 0.68 1.95 1.95 <br />TBD** TBD** <br />Emergency - EV2 0.37 1.07 1.07 <br />TBD** TBD** <br />Emergency - EV3 0.40 1.15 1.15 <br />*Grade Raise from assumed 1'-9" existing roadway section <br />**Rating factor would be determined during design <br />A rating factor less than 1.0 generally means that the bridge may require posting. A rating factor less than <br />1.0 for the Design Î HL-93 (Inventory) truck does not require posting. <br /> <br />3 Estimated Costs <br />Cost estimates are provided below for each option. Estimates include 20% indirect costs and a 30% <br />construction contingency. Note that these estimates are very preliminary in nature. Once a preferred <br />option is chosen, further information and analysis will be required to provide a more detailed cost estimate. <br />Note that potential easement or right of way acquisition costs are not included in the estimates. <br />Option 1 - Bituminous Pavement with Grade Raise <br /> $335,000 <br />Option 2 - Concrete Pavement with Grade Raise: <br /> $325,000 <br />Option 3 Î Structural Liner <br /> $320,000 <br />66 <br /> <br />