Construction has started at the new King County juvenile jail, but politicians and activists are still fighting about it.

The latest challenge to a new youth detention center was rejected by a King County judge this week.

Meantime, King County Executive Dow Constantine held up a new report saying that it confirmed the latest design would help the county get to its goal of zero youth detention.

In May, Constantine asked the University of Washington’s Dr. Eric Trupin to evaluate the design of the building, programs and staff training.

Trupin is an expert in juvenile justice at the UW School of Medicine. His report makes recommendations for helping the county manage youth in ways that will help prevent them from becoming ensnared in the criminal justice system.