Concrete repairs will require contractors working for the Missouri Department of Transportation to close the entrance and exit ramps along Interstate 44 in St. Robert. The eastbound exit ramp was closed at exit 161 last night, while the eastbound entrance ramp will be closed at exit 163 this evening. The ramps will be closed from 9 p.m. until 6 a.m. . Motorists exiting or entering I-44 traffic will need to use alternate routes. Message boards are in place to inform drivers of the ramp closures.