Question
QUESTION: I need to plant a few trees that will grow to a fair height 30-40 minimum but they need to be lined along a driveway that has only 34 inches of clearance to a property line.  The problem is, the roots in one direction roots will be covered by the cement pad of a driveway.  This would restrict access to water I would think not to mention the possibility of driveway damage.  Any suggestions?

If this can't be achieved, are there any fair compromises?

ANSWER: There is no tree that will fit into a 34 inch space without either the branches extending over the drive OR the roots damaging the drive. You really only have 17 inches of clearance from the stem of a plant to the drive. I really think you do not need to plant any tree or shrub in this space. Maybe need to look at a low ground cover type plant or a day Lilly bed or Hosta plants along the drive.
I would check with a local nursery and discuss with them the space needs and select a plant that will grow well in your location.

---------- FOLLOW-UP ----------

QUESTION: Thank you for the answer.  Let me define need:

Need = comply with a township screening ordinance.

I agree with your answer but figured I'd ask.  Hopefully I'll be let out of the more draconian requirements of what they want.

Answer
There is no tree that will grow 30-40 feet tall that will fit into this space. The screening ordinance of this height is not realistic. IF a tree was planted as it grew larger the lower limbs would be naturally shed leaving a open space not a screen. A hedge type plant "could" be planted and kept pruned but it would not reach more than 10 feet tall at the most and would with out constant pruning rub the cars coming into the drive. I think this is a case of poor requirement on the part of an ordinance.