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                          December 11, 2020

       Gil Melman
       Executive Vice President, Corporate Secretary and General Counsel
       Infrastructure & Energy Alternatives, Inc.
       6325 Digital Way, Suite 460
       Indianapolis, Indiana 46278

                                                        Re: Infrastructure &
Energy Alternatives, Inc.
                                                            Registration
Statement on Form S-3
                                                            Filed December 4,
2020
                                                            File No. 333-251148

       Dear Mr. Melman:

              This is to advise you that we have not reviewed and will not
review your registration
       statement.

               Please refer to Rules 460 and 461 regarding requests for
acceleration. We remind you
       that the company and its management are responsible for the accuracy and
adequacy of their
       disclosures, notwithstanding any review, comments, action or absence of
action by the staff.

                                                        Please contact Ronald
(Ron) E. Alper at 202-551-3329 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Real Estate & Construction
       cc:                                              Clinton H. Smith