Hwy 45 is a 4-lane highway both North and South of the Hwy 82 overpass. The speed limit is 65 MPH both North and South of the Overpass. However under the overpass the speed limit immediately drops to 55 MPH (still 4-lanes of traffic though), and both Loundes County Police and Miss. Hwy Patrol cars like to sit under the overpass and nail people who miss the 55 MPH signs. The also goes for people exiting off of Hwy 45 and onto Hwy 82 in either the East or West Direction.