EXHIBIT 99.4

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with each of the Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, par value $0.0001 per share, of Infrastructure and Energy Alternatives, Inc., a Delaware corporation, and that this agreement may be included as an exhibit to such joint filing.

IN WITNESS WHEREOF, the undersigned hereby execute this agreement as of October 9, 2019.

ARES SPECIAL SITUATIONS FUND IV, L.P.
By:	ASSF OPERATING MANAGER IV, L.P.
Its:	Manager
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ASSF OPERATING MANAGER IV, L.P.
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ASOF HOLDINGS I, L.P.
By:	ASOF INVESTMENT MANAGEMENT LLC
Its:	Manager
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ASOF INVESTMENT MANAGEMENT LLC
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES MANAGEMENT LLC
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory

ARES MANAGEMENT HOLDINGS L.P.
By:	ARES HOLDCO LLC
Its:	General Partner
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES HOLDCO LLC
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES HOLDINGS INC.
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES MANAGEMENT CORPORATION
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES MANAGEMENT GP LLC
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES VOTING LLC
By:	ARES PARTNERS HOLDCO LLC
	Its Sole Member
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory
ARES PARTNERS HOLDCO LLC
	/s/ Michael Weiner
	By:	Michael Weiner
	Its:	Authorized Signatory