<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2022-07-15</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001899883</issuerCik>
        <issuerName>FTAI Infrastructure LLC</issuerName>
        <issuerTradingSymbol>FIP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001938288</rptOwnerCik>
            <rptOwnerName>Fortress Worldwide Transportation &amp; Infrastructure General Partnership</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1345 AVENUE OF THE AMERICAS, 45TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001590364</rptOwnerCik>
            <rptOwnerName>Fortress Transportation &amp; Infrastructure Investors LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1345 AVENUE OF THE AMERICAS, 45TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Interests</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The securities beneficially owned represent 100% of the common interests of the Issuer held directly by Fortress Worldwide Transportation and Infrastructure General Partnership. Fortress Worldwide Transportation and Infrastructure General Partnership is a majority-owned subsidiary of Fortress Transportation and Infrastructure Investors LLC.</footnote>
    </footnotes>

    <remarks>This Form 3 is being filed in connection with the Securities and Exchange Commission's declaration of effectiveness of the Registration Statement on Form 10 of FTAI Infrastructure LLC (the &quot;Issuer&quot;), which describes the separation of the Issuer from Fortress Transportation &amp; Infrastructure Investors LLC.</remarks>

    <ownerSignature>
        <signatureName>Fortress Worldwide Transportation and Infrastructure General Partnership;
By its general partner, Fortress Worldwide Transportation and Infrastructure Master GP LLC;
By: /s/ Demetrios Tserpelis, Authorized Signatory</signatureName>
        <signatureDate>2022-07-15</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Fortress Transportation and Infrastructure Investors LLC; By: /s/ Joseph P. Adams Jr., Chief Executive Officer</signatureName>
        <signatureDate>2022-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
