1997 Honda Civic vibration in steering column

Steering problem
1997 Honda Civic Wheel Drive Type unknown Automatic 104k miles

Hi, I get vibration in the steering column after driving about 5 miles. It's fine when I let it set and start again. Vibrates less in neutral and park. Am driving to work 7 miles at abt 40 mph. It seems to vibrate less at higher speed than at idle. Have recently repaired rear main seal, timing belt, alternator. Thanks for any suggestions!