Exhibit 12.1  CERTIFICATION  I, Samuel Pollock, certify that:  1.I have reviewed this Annual
Report on Form 20-F of Brookfield Infrastructure Partners L.P.;  2.Based on my knowledge, this
report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with
respect to the period covered by this report;  3.Based on my knowledge, the
financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of
operations and cash flows of the registrant as of, and for, the periods
presented in this report;  4.The registrants other
certifying officer and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in
Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
have:  a.Designed such disclosure
controls and procedures, or caused such disclosure controls and procedures to
be designed under our supervision, to ensure that material information relating
to the registrant, including its consolidated subsidiaries, is made known to us
by others within those entities, particularly during the period in which this
report is being prepared;  b.Designed such internal
control over financial reporting, or caused such internal control over
financial reporting to be designed under our supervision, to provide reasonable
assurance regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with generally
accepted accounting principles;  c.Evaluated the effectiveness
of the registrants disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and
procedures, as of the end of the period covered by this report based on such
evaluation; and  d.Disclosed in this report any
change in the registrants internal control over financial reporting that
occurred during the period covered by the Annual Report that has materially
affected, or is reasonably likely to materially affect, the registrants
internal control over financial reporting; and  5.The registrants other
certifying officer and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the registrants auditors and the
audit committee of the registrants board of directors (or persons performing
the equivalent functions):  a.All significant deficiencies
and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the
registrants ability to record, process, summarize and report financial
information; and  b.Any fraud, whether or not
material, that involves management or other employees who have a significant
role in the registrants internal control over financial reporting.  Dated: May 26, 2010/s/ Samuel PollockName: Samuel PollockTitle: CEO, Brookfield Infrastructure Group
  Corporation  1