What type of shrub will grow in Denver, CO in a high salt environment?

Our house is on a busy road. Our landlord said he would pay for some landscaping screening along the road but that he had tried many times and nothing grew. The salt used on the road during snow and ice storms would run off into the ditch and into the drip line of the shrubs/trees. Is there a hearty shrub/tree that will stand 5' high and will endure the salt. Also, a well supplies the irrigation so it does not need to be xeriscape or drought tolerant.