Here's an aerial shot from 1938, courtesy LAPL website.
You can see how Spring Street was widened, and the little street that was adjacent to the Hall of Justice basically became a parking lot. The Hall of Justice building still exists, but it's been abandoned since 1994, the year of the Northridge Earthquake. It supposedly isn't safe to occupy. There have been plans to rehab and seismically strengthen the building but it hasn't happened yet. The construction site you see is for the Federal Courthouse building.
