All facilities in the United States are supposed to maintain a minimum set of standards that comply with the Americans with Disabilities Act, or ADA, in order to be ADA compliant. Problems have arisen in recent years, though, with the lack of effort by city planners and civil engineers. The ADA works very hard to recognize all barriers, structural and architectural, that impede handicapped patrons. Be it at bars, restaurants, or grocery stores, there is a growing concern that the people in charge are not taking ADA compliance into consideration, and if they are it's a minimum and they certainly are not doing anything to exceed this mandate.
There are many companies out there who sell ADA compliant materials like signs, markers, stencils, and that type of thing. But if they're not being utilized properly, who is going to do something about it? Businesses and civil engineers need to take all types of patron, customer, or otherwise into account and make way for people who may need special ways to enjoy their business.
Enforcing state and local codes is the responsibility of state and local officials. Normally they're inspected with plan reviews and building inspections. As with other smaller groups, the ADA has to rely heavily on the traditional methods of enforcement of civil rights. Which means litigation in federal courts and spending more money and time to correct what needs to be fixed. The federal government is the end-all, be-all with the ADA, that said, local officials cannot enforce it. They are more than welcome to suggest changes, and honestly, most civil engineers and planners say they'll try their best to comply. But this is usually at a minimum, nothing exceeding what needs to be done.
Those who have friends or loved ones, or are themselves handicapped are well aware of the lack of properly adhered to ADA compliances. Compliance of ADA-certified codes not being met has resulted in mitigation with the help of the federal government. And while this does do something to help those affected by noncompliance, it's still just scratching the surface, as many buildings would need to be completely rebuilt or heavily altered to accomplish this task. Accessibility isn't just something that affects a few, it's a serious problem and it must be addressed with proper following of codes and placement of signs.