The cost of fixing multiple problems at the 21st Century Waterfront could be as much as $7.8 million, City Council members were told in a briefing on Wednesday.
The low end of the range was put at $4.5 million.
The city earlier spent $1.6 million to repair problems at The Passage - a section of the waterfront between the Tennessee Aquarium and Market Street.
The report was from the HDR firm.
City employees months ago began noticing problems in the area of Ross's Landing Park between The Passage and the Chattanooga Pier.
Problems include pavement blocks that are cracking and also settling.
City officials said no decisions have yet been made on when to start the repairs or which areas to work on first.