Cohen & Steers Infrastructure Fund (UTF) N-CSRS Certified semi-annual shareholder report (management investment company)

EXHIBIT 99.906CERT

EXHIBIT 12 (b)

RULE 30a-2(b) CERTIFICATION

In connection with the report of Cohen & Steers Select Utility Fund, Inc. (the “Company”) on Form N-CSR as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Adam M. Derechin, Principal Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Adam M. Derechin

Adam M. Derechin

Principal Executive Officer

Date: August 27, 2008

EXHIBIT 12 (b)

RULE 30a-2(b) CERTIFICATION

In connection with the report of Cohen & Steers Select Utility Fund, Inc. (the “Company”) on Form N-CSR as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James Giallanza, Principal Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ James Giallanza

James Giallanza

Principal Financial Officer

Date: August 27, 2008