Excessive blood concentration. Any BAC of at least .08% is considered excessive. The BAC threshold is reduced to .04% if the licensee is driving a commercial vehicle. And Missouri has underage DWI laws that prohibit motorists who are under 21 years old from driving with a BAC of .02% or more.
The amount of alcohol a person must drink to reach the legal limit depends on a number of individual factors.
| 1st Offense | 2nd Offense | 3rd Offense | |
| Jail | Up to 6 months |
Up to 1 year | Up to 4 years |
| Fines |
Up to $1,000 |
Up to $2,000 | Up to $10,000 |
| License Suspension | 30 days, then 60-day restricted license |
5-year revocation | 10-year revocation |
| Ignition Interlock Device | Possible as a condition of restricted license |
6 months minimum | 6 months minimum |
888-234-0198
