Salt Lake City officials say Friday's action affirming a district court ruling should end a long legal battle between the city and critics, including environmental groups.
Full-scale construction of the complex featuring 16 soccer fields and a multipurpose center is set to begin in the spring with completion in 2014.
Real Salt Lake is donating $7.5 million for it.
A group calling itself the Jordan River Restoration Network fought the city on various legal grounds.
Group spokesman Ray Wheeler calls the city's decision to build the complex along the river irresponsible, saying it will destroy wetlands and adversely affect migratory birds.
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