Exhibit 8.1

BARACK FERRAZZANO KIRSCHBAUM & NAGELBERG LLP

200 WEST MADISON STREET, SUITE 3900

CHICAGO, ILLINOIS 60606

Telephone (312) 984-3100

Facsimile (312) 984-3150

March 1, 2012

First Industrial Realty Trust, Inc.

311 S. Wacker Drive

Suite 3900

Chicago, Illinois 60606

Re: First Industrial Realty Trust, Inc.

Ladies and Gentlemen:

We have acted as tax counsel to you in connection with the filing by First Industrial Realty Trust, Inc., a Maryland corporation (the “Company”), and First Industrial, L.P., a Delaware limited partnership (the “Operating Partnership”) with the Securities and Exchange Commission (the “Commission”) of a registration statement on Form S-3 filed on the date hereof (which, together with the prospectus included therein shall hereinafter be referred to as the “Registration Statement”), pursuant to the Securities Act of 1933, as amended (the “Act”), for the purpose of registering, for an aggregate offering price of up to $1,500,000,000, (i) securities of the Company consisting of (a) common stock, par value $0.01 per share (the “Common Stock”), (b) preferred stock, par value $0.01 per share (the “Preferred Stock”), and (c) depositary shares representing shares of Preferred Stock (the “Depositary Shares” and, together with the Common Stock and the Preferred Stock, the “Company Securities”) to be offered from time to time by the Company, and (ii) senior debt securities of the Operating Partnership (the “Debt Securities”), to be offered from time to time by the Operating Partnership, pursuant to the Indenture (the “Indenture”), dated as of May 13, 1997, between the Operating Partnership and U.S. Bank National Association (formerly known as First Trust National Association), as trustee (the “Trustee”). Certain capitalized terms used herein without definition are as defined in the Registration Statement.

You have requested our opinion regarding certain U.S. federal income tax considerations relating to the Company’s qualification as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”). In rendering this opinion, we have examined and relied upon the descriptions of the Company, the Operating Partnership, their subsidiaries, and their respective investments, as well as their respective proposed investments, activities, operations, and governance, as set forth or incorporated in the Registration Statement. We have reviewed originals or copies, certified or otherwise identified to our satisfaction, of such documents, agreements, and information as we have deemed necessary for purposes of rendering the opinion contained herein. For purposes of such examination, we have assumed the authenticity of all documents submitted to us as originals, the conformity to authentic original

BARACK FERRAZZANO KIRSCHBAUM & NAGELBERG LLP

First Industrial Realty Trust, Inc.

March 1, 2012

Page 2

documents of all documents submitted to us as copies, the legal capacity of natural persons executing such documents, and the genuineness of all signatures on originals or copies.

The opinion set forth herein is premised on certain factual representations made by the Company, the Operating Partnership, and their subsidiaries through a certificate of an officer of the Company, dated as of the date hereof (the “Officer’s Certificate”) and is also premised on an assumption that if the Company ultimately were found not to have satisfied the REIT gross income requirements for any of the taxable years between 2000 and 2003 as a result of certain development agreements entered into by the Company during those years, such failure was due to reasonable cause and not due to willful neglect. For the purposes of rendering this opinion, we have not made an independent investigation of the facts set forth in any of the aforementioned documents, including, without limitation, the Registration Statement and the Officer’s Certificate. We have consequently relied upon your representations that the information presented in such documents or otherwise furnished to us accurately and completely describes all material facts relevant to this opinion.

Our opinion is based upon the current provisions of the Code, Treasury regulations promulgated thereunder, current administrative rulings, judicial decisions, and other applicable authorities, all as in effect on the date hereof. All of the foregoing authorities are subject to change or new interpretation, both prospectively and retroactively, and such changes or interpretation, as well as changes in the facts as they have been represented to us or assumed by us, could affect our opinion. Our opinion is rendered only as of the date hereof and we undertake no responsibility to update this opinion after this date. Our opinion does not foreclose the possibility of a contrary determination by the Internal Revenue Service (the “IRS”) or by a court of competent jurisdiction, or of a contrary position by the IRS or Treasury Department in regulations or rulings issued in the future.

Based on the foregoing, and subject to the limitations, qualifications and exceptions set forth herein, we are of the opinion that:

1. Commencing with the Company’s initial taxable year ending December 31, 1994, the Company has been organized and has operated in conformity with the requirements for qualification as a REIT under the Code, and the Company’s proposed method of operation (as represented by the Company in the Officer’s Certificate) will enable it to continue to meet the requirements for qualification and taxation as a REIT under the Code; and

2. The discussion in the Registration Statement under the heading “Certain U.S. Federal Income Tax Considerations,” to the extent it purports to summarize certain provisions of the statutes or regulations referred to therein, is accurate in all material respects.

The Company’s qualification and taxation as a REIT depend upon the Company’s ability to meet, on a continuing basis, through actual annual operating and other results, the

BARACK FERRAZZANO KIRSCHBAUM & NAGELBERG LLP

First Industrial Realty Trust, Inc.

March 1, 2012

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various requirements under the Code and described in the Registration Statement with regard to, among other things, the sources of its gross income, the composition of its assets, the level of its distributions to stockholders, and the diversity of its stock ownership. Barack Ferrazzano Kirschbaum & Nagelberg LLP undertakes no responsibility to, and will not, review the Company’s compliance with these requirements on a continuing basis. Accordingly, no assurance can be given that the actual results of the Company’s operations for any particular taxable year will satisfy the requirements under the Code for qualification and taxation of the Company as a REIT.

Other than as expressly stated above, we express no opinion on any issue relating to the Company, the Operating Partnership, or any of their subsidiaries or any investment therein.

This opinion is being delivered to you solely for use in connection with the Registration Statement as of the date hereof. This opinion is solely for the benefit of the above-named addressee and may not be relied upon by any other person in any manner whatsoever without our prior written permission. Notwithstanding the foregoing, we hereby consent to the reference to our firm in the Registration Statement under the captions “Certain U.S. Federal Income Tax Considerations” and “Legal Matters” and to the inclusion of this opinion as an exhibit to the Registration Statement. Our consent to such reference does not constitute a consent under Section 7 of the Act as in consenting to such reference we have not certified any part of the Registration Statement and do not otherwise come within the categories of persons whose consent is required under Section 7 of the Act or under the rules and regulations of the Commission thereunder.

Very truly yours,

/s/ BARACK FERRAZZANO KIRSCHBAUM

& NAGELBERG LLP