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INVESTMENT PROPERTIES
 12 Months Ended
Dec. 31, 2021
Investment property [abstract]  
INVESTMENT PROPERTIES INVESTMENT PROPERTIES
The following table presents the carrying amount for Brookfield Infrastructure’s investment properties:
US$ MILLIONS20212020
Balance at beginning of the year$518 $416 
Additions, net of disposals106 3 
Fair value adjustments42 68 
Foreign currency translation(11)31 
Balance at end of the year$655 $518 
Investment properties are measured at fair value on a recurring basis and the effective date of revaluation is December 31, 2021 and 2020. The fair value of our partnership’s investment properties are determined by management of our partnership with due consideration given to relevant market conditions. The following table summarizes the valuation techniques and significant inputs for Brookfield Infrastructure’s investment property. Our partnership has classified all assets below under level 3 of the fair value hierarchy:
Segment Valuation technique Significant unobservable inputs Range of inputs
TransportDirect Income Capitalization Capitalization Rate 
6% to 14%
DataDirect Income CapitalizationCapitalization Rate
6% to 8%
An increase in the capitalization rate would lead to a decrease in the fair value of investment property, with the opposite impact for a decrease in the capitalization rate.