Tutor Perini (TPC) 10-Q 2017 Q2 Quarterly report

Exhibit32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION1350,

AS ADOPTED PURSUANT TO SECTION906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Tutor Perini Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2017 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gary G.  Smalley, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section13(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.

Date: August7, 2017	/s/Gary G.  Smalley
	Gary G.  Smalley
	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section906 has been provided to Tutor Perini Corporation and will be retained by Tutor Perini Corporation and furnished to the Securities and Exchange Commission or its staff upon request.