do I need to depreciate my new driveway on my rental unit, or fully deduct it for 2024?

I found this definition of a capital improvement online.  I hope it helps you decide:

What is a capital improvement?

A capital improvement is any addition or alteration to real property that meets all three of the following conditions:

• It substantially adds to the value of the real property, or appreciably prolongs the useful life of the real property.
• It becomes part of the real property or is permanently affixed to the real property so that removal would cause material damage to the property or article itself.
• It is intended to become a permanent installation.

For example, building a deck, installing a hot water heater, or installing kitchen cabinets are all capital improvement projects. Repairing a broken step, replacing a thermostat on a hot water heater, or painting existing cabinets are all examples of taxable repair and maintenance work.

Publication 862, Sales and Use Tax Classifications of Capital Improvements and Repairs to Real Property, provides detailed information on various types of work that do and do not qualify as capital improvements. Since the method of installation may affect how the work is taxed, certain work will need to be looked at on a case-by-case basis.