Lindsay Lohan -- Mission Accomplished!!! I Finished My Community Service

Lindsay Lohan just did what nobody thought possible ... she completed her community service, but just in the nick of time.

We just got word from the prosecutor, Chief Deputy Terry White, who confirmed Lindsay put in nearly 8 hours a day for several weeks without a break to get the job done.

Lindsay didn't have any time to spare. Her lawyer, Shawn Holley, will be in court Thursday with proof that the 125 hours were completed.

So tomorrow marks a new chapter in Lindsay's life ... it will be the first time in nearly 7 years she's off probation.