If you think a warrant may have been issued for your arrest, you can check and see if you are correct. If you missed a court date and believe a warrant was issued for your arrest and you are represented by a lawyer, you should immediately contact them. They should be able to confirm if a warrant was issued.
If a warrant has been issued, you can surrender yourself to the jail. Your other option is to surrender at the holding area of the courthouse. That entry is on the Main Street side of the courthouse. They accept surrenders on misdemeanor cases on Friday mornings. You must be there no later than 8 a.m. Your case will probably be heard on a morning calendar. They accept felony surrenders on Thursday mornings. Again, you must be there no later than 8 a.m. Felonies will be taken to the jail and booked. They will not appear until the Thursday afternoon calendar.