Can LA Noire be played after it is finished

LA Noire's missions (cases) are sorted by desks, which represent Cole's current role in the LAPD - Patrol, Traffic, Homicide, Vice, and Arson. Any completed case can be replayed, and for each completed desk, you can enter a 'Streets of LA' free roam mode to complete that desk's 'street crimes', 12 for Traffic, 13 for Homicide, 10 for Vice and 5 for Arson. As well as this, you can use this to find special locations, hidden vehicles, movie reels, etc.