<SEC-DOCUMENT>0001193125-16-488029-index.html : 20160301
<SEC-HEADER>0001193125-16-488029.hdr.sgml : 20160301
<ACCEPTANCE-DATETIME>20160301154113
ACCESSION NUMBER:		0001193125-16-488029
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		26
CONFORMED PERIOD OF REPORT:	20151231
FILED AS OF DATE:		20160301
DATE AS OF CHANGE:		20160301
EFFECTIVENESS DATE:		20160301

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BlackRock Utility & Infrastructure Trust
		CENTRAL INDEX KEY:			0001528988
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22606
		FILM NUMBER:		161473038

	BUSINESS ADDRESS:	
		STREET 1:		55 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
		BUSINESS PHONE:		(800) 882-0052

	MAIL ADDRESS:	
		STREET 1:		55 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>d100690dncsr.htm
<DESCRIPTION>BLACKROCK UTILITY & INFRASTRUCTURE TRUST
<TEXT>
Document 1 - file: d100690dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d100690dex99cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302
<TEXT>
Document 2 - file: d100690dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d100690dex99906cert.htm
<DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906
<TEXT>
Document 3 - file: d100690dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.19.12
<SEQUENCE>4
<FILENAME>d100690dex991912.htm
<DESCRIPTION>SECTION 19(A) NOTICE
<TEXT>
Document 4 - file: d100690dex991912.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXY.POL
<SEQUENCE>5
<FILENAME>d100690dex99proxypol.htm
<DESCRIPTION>PROXY VOTING POLICY
<TEXT>
Document 5 - file: d100690dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CORP.GOVN
<SEQUENCE>6
<FILENAME>d100690dex99corpgovn.htm
<DESCRIPTION>GLOBAL CORPORATE GOVERNANCE AND ENGAGEMENT PRINCIPLES
<TEXT>
Document 6 - file: d100690dex99corpgovn.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g221211dsp_11.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g221211dsp_11.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g221211dsp_13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g221211dsp_13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g221211dsp_15.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g221211dsp_15.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g221211dsp_17.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g221211dsp_17.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g221211dsp_19.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g221211dsp_19.jpg

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g221211dsp_21.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g221211dsp_21.jpg

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<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g221211dsp_23.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g221211dsp_23.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>g221211dsp_31.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: g221211dsp_31.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>g221211dsp_9n.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: g221211dsp_9n.jpg

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<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>g221211g30j73.jpg
<DESCRIPTION>GRAPHIC
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Document 16 - file: g221211g30j73.jpg

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<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>g221211new146.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: g221211new146.jpg

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<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>g221211new146a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: g221211new146a.jpg

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<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>g221211tx_7.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: g221211tx_7.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>g246880g15u52.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: g246880g15u52.jpg

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<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>g246880g24b83.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: g246880g24b83.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>g246880g30b33.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 22 - file: g246880g30b33.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>g246880g37o03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 23 - file: g246880g37o03.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>g246880g76u45.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 24 - file: g246880g76u45.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>g246880g79d00.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 25 - file: g246880g79d00.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>g246880g93w14.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 26 - file: g246880g93w14.jpg

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