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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2019-12-23 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001289790 </issuerCik> |
| | <issuerName> Macquarie Infrastructure Corp </issuerName> |
| | <issuerTradingSymbol> MIC </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001418333 </rptOwnerCik> |
| | | <rptOwnerName> MACQUARIE GROUP LTD </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> LEVEL 6, 50 MARTIN PLACE </rptOwnerStreet1> |
| | | <rptOwnerStreet2> SYDNEY, NEW SOUTH WALES 2000 </rptOwnerStreet2> |
| | | <rptOwnerCity> AUSTRALIA </rptOwnerCity> |
| | | <rptOwnerState> C3 </rptOwnerState> |
| | | <rptOwnerZipCode></rptOwnerZipCode> |
| | | <rptOwnerStateDescription> AUSTRALIA </rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 0 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 1 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001311388 </rptOwnerCik> |
| | | <rptOwnerName> Macquarie Infrastructure Management (USA) INC </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 125 W. 55TH STREET </rptOwnerStreet1> |
| | | <rptOwnerStreet2></rptOwnerStreet2> |
| | | <rptOwnerCity> NEW YORK </rptOwnerCity> |
| | | <rptOwnerState> NY </rptOwnerState> |
| | | <rptOwnerZipCode> 10019 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 1 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 1 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.001 per share </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2019-12-23 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness> |
| <value></value> |
| </transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 69947 </value> |
| <footnoteId id="F1"/> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 41.98 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 13314991 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| <footnoteId id="F2"/> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> See footnote (2) </value> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Represents shares of Common Stock issued to Macquarie Infrastructure Management (USA) Inc. upon reinvestment of base fees for the month ended November 30, 2019. </footnote> |
| | <footnote id="F2"> Includes 65,800 shares held in various investment funds for which Macquarie Investment Management Global Limited, a subsidiary of MGL, acts as investment advisor. MIMUSA holds the balance of the shares. Each reporting person disclaims beneficial ownership of all such securities except to the extent of its pecuniary interest therein. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> MGL, MIMUSA, - /s/ Charles Glorioso, Authorized Signatory, /s/Paul Peduto, Authorized Signatory </signatureName> |
| | <signatureDate> 2019-12-24 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |