There is a substantial number of slum, deteriorated, or deteriorating structures and conditions that endanger life or property by fire or other causes or one or more of the following factors which substantially impairs or arrests the sound growth of a county or municipality and is a menace to the public health, safety, morals, or welfare in its present condition and use.

There is faulty or inadequate street layout; inadequate parking facilities; or roadways, bridges, or public transportation facilities incapable of handling the volume of traffic flow into or through the area, either at present or following proposed construction.