ST. LOUIS (AP) — Plans for a $380 million renovation of the Gateway Arch grounds in St. Louis could be delayed by a dispute between a nonprofit partner and the federal park service.

The National Park Service's construction advisory board didn't approve the project Wednesday after a presentation by Arch grounds officials in Denver. The board's approval is required before bidding and construction can begin. The board's next meeting is in March.

The St. Louis Post-Dispatch reports one of the project's partners, the CityArchRiver 2015 Foundation, refused to provide several agreements between it and the park service for the presentation. The group is upset a separate contract concerning operation of the Arch trams hasn't been signed.

Project leaders are trying to finish the project by the Arch's 50th anniversary in October 2015.