Corrpro Begins $2.3 Million Project With US Coast Guard in Alaska.

CHESTERFIELD, Mo. -- Corrpro Companies, Inc. ("Corrpro"), a subsidiary of Insituform Technologies, Inc. (NASDAQ Global Select Market: INSU), announced today that it has begun work on a $2.3 million project for a United States Coast Guard ("USCG") cargo wharf in Kodiak, Alaska. The project will protect the steel wharf piles from corrosion and consists of over three hundred 270-pound aluminum anodes and coated steel bond bars.

The project will replace an under-performing cathodic protection system and includes the demolition of the existing cathodic protection system as well as structural steel and concrete repairs. New structural steel members will be installed to reinforce the existing steel piles. The entire project will be completed over water and underwater in a region which experiences some of the highest tidal fluctuations in the world.

Corrpro will work under Jay-Brant General Contractors, LLC, a pre-qualified general contractor for the Coast Guard, to complete this project at the USCG Base, Kodiak, the largest active base in the United States. "Jay-Brant is pleased to be able to expand the services we offer to the USCG by providing cathodic protection on the cargo wharf by virtue of our contractual relationship with Corrpro. We have relied upon the professional expertise provided by Corrpro in meeting our obligations to the USCG," said Chuck Jay, co-owner of Jay-Brant.

"We are pleased to work with Jay-Brant as well as the Coast Guard," said Bill Larkin, President and CEO of Corrpro. "At the conclusion of this project, the Coast Guard will have a fully-functioning cathodic protection system that protects their steel piles from corrosion. Since 2005, Corrpro has received approximately $45 million in revenue from various branches of the United States government, our largest customer."

Corrpro anticipates work on the project will be completed by September 2009.

About Corrpro

Corrpro Companies, Inc. was acquired by Insituform Technologies, Inc. in early 2009. For over 25 years, Corrpro has been a leading provider of cathodic protection systems and engineering services. As a subsidiary of Insituform Technologies, Inc., Corrpro offers corrosion solutions for every industrial market including pipeline, refinery, above and underground storage tanks, water, wastewater, concrete, infrastructure, offshore, and marine. More information about Corrpro can be found on its internet site at www.corrpro.com.

About Insituform

Insituform Technologies, Inc. is a leading worldwide provider of proprietary technologies and services for rehabilitating sewer, water, energy and mining piping systems and the corrosion protection of industrial pipelines. More information about Insituform can be found on its internet site at www.insituform.com.

Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for forward-looking statements. The Company makes forward-looking statements in this news release that represent the Company's beliefs or expectations about future events or financial performance. These forward-looking statements are based on information currently available to the Company and on management's beliefs, assumptions, estimates or projections and are not guarantees of future events or results. When used in this document, the words "anticipate," "estimate," "believe," "plan," "intend," "may," "will" and similar expressions are intended to identify forward-looking statements, but are not the exclusive means of identifying such statements. Such statements are subject to known and unknown risks, uncertainties and assumptions, including those referred to in the "Risk Factors" section of the Company's Annual Report on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on March 2, 2009, and in our subsequent quarterly reports on Form 10-Q. In light of these risks, uncertainties and assumptions, the forward-looking events may not occur. In addition, our actual results may vary materially from those anticipated, estimated, suggested or projected. Except as required by law, we do not assume a duty to update forward-looking statement, whether as a result of new information, future events or otherwise. Investors should, however, review additional disclosures made by the Company from time to time in its periodic filings with the Securities and Exchange Commission. Please use caution and do not place reliance on forward-looking statements. All forward-looking statements made by the Company in this news release are qualified by these cautionary statements.

Insituform([R]), the Insituform([R]) logo, Corrpro[R] and the Corrpro[R] logo are the registered and unregistered trademarks of Insituform Technologies, Inc. and its affiliates.