PHOENIX (AP) – The developer of the Grand Canyon Skywalk is asking a federal judge to enforce a more than $28 million judgment against a northern Arizona tribe.

The American Arbitration Association awarded David Jin the money in a contract dispute with the Hualapai Tribe. His attorneys filed the enforcement request this week with the U.S. District Court in Arizona.

Jin invested $30 million to build the Skywalk, a glass bridge that gives visitors a view of the Colorado River from the Hualapai reservation. He and the Hualapai Tribe have been locked in a dispute over management fees and an incomplete visitor center.

The tribe severed Jin's interest in the Skywalk earlier this year and contends the arbitration award isn't enforceable. It did not participate in a final arbitration hearing in July.