Sharraxaadda

On Tall Timber Dr (speed limit posted 15mph) the first speed bump you come up to as you pull into this neighborhood keeps hitting the bottom of my car even when I drive over it under 10mph. It is not safe for 15mph but there are no signs indicating as such and looking at the road it looks uneven (its on a bit of a curve) and unlevel which could be the cause, otherwise it might just be a badly implemented speed bump. Im worried this is going to cause damage to my vehicle over time unless it is fixed.