Courthouse tours: La Salle County Courthouse The La Salle County Courthouse was finished in 1883. Address: 119 W. Madison, Ottawa Entrance: Front of the building Hours: Mon-Fri 8 a.m.-4:30 p.m. Year built: 1883 Judicial Circuit: 13th (Bureau, Grundy) Click here to view the photo tour View previous courthouse tours: Illinois Supreme Court Lincoln Courtroom Museum Kane County Courthouse Grundy County Courthouse 3rd Appellate Court Building Posted on September 4, 2009 by Chris BonjeanFiled under: Northern IllinoisTopic: Courthouse tours