coverletter.htm

[Letterhead of Skadden, Arps, Slate, Meagher & Flom LLP]

October 11, 2011

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

RE:

BlackRock Utility and Infrastructure Trust – N-2/A Filing

Ladies and Gentlemen:

On behalf of BlackRock Utility and Infrastructure Trust (the “Trust”), we are enclosing herewith for filing pursuant to the Securities Act of 1933, as amended (the “Securities Act”), and the General Rules and Regulations of the Securities and Exchange Commission (the “Commission”) thereunder, and the Investment Company Act of 1940, as amended, and the General Rules and Regulations of the Commission thereunder, one electronically signed pre-effective amendment to the Trust’s Registration Statement on Form N-2 (the “Registration Statement”).

A fee of $116.10 to cover the registration fee under the Securities Act was previously paid.

If you have any questions or require any further information with respect to this Registration Statement, please call me at (617) 573-4814 or Kevin Hardy at (312) 407-0641.

	Very truly yours,

	/s/ Thomas A. DeCapo

	Thomas A. DeCapo

Enclosure