Property owners along South Howard Avenue in Tampa, Florida, have filed two class-action lawsuits seeking to stop a major stormwater infrastructure project, citing concerns over property rights, funding procedures and potential impacts on local businesses.

The project calls for installing box culverts along approximately 6,500 feet to convey stormwater from flood-prone Palma Ceia Pines and Parkland Estates to Hillsborough Bay. Tampa City Council approved construction in a 4-3 vote in September.

One lawsuit challenges the city’s use of stormwater assessment revenue and bond proceeds, alleging the project’s scope and cost have grown beyond what was outlined in 2023 bond documents without proper notice to property owners. The project was initially estimated at $76 million, while the first phase was priced at approximately $100 million. The plaintiffs estimate the total cost could reach $181 million to $230 million.

The second lawsuit argues that the city’s public easement for South Howard Avenue does not authorize excavation beneath private property to install the culverts. The plaintiffs seek court orders to halt the work and, in the property rights case, damages.

The lawsuits name the city, Mayor Jane Castor, Kimmins Contracting Corp. and AtkinsRéalis USA as defendants. The city declined to comment on pending litigation.

Business owners, including Bern’s Steak House, have warned that prolonged excavation and street closures could disrupt the South Howard business district. The plaintiffs say they support addressing neighborhood flooding but contend the current project design could threaten businesses and take longer to complete than anticipated.