49 CFR Parts 37 & 38 - Department of Transportation (DOT) ADA Regulations

(e)

(1) Alterations made to provide an accessible path of travel to the altered area will be deemed disproportionate to the overall alteration when the cost exceeds 20 percent of the cost of the alteration to the primary function area (without regard to the costs of accessibility modifications).

(2) Costs that may be counted as expenditures required to provide an accessible path of travel include:

(i) Costs associated with providing an accessible entrance and an accessible route to the altered area (e.g., widening doorways and installing ramps);

(ii) Costs associated with making restrooms accessible (e.g., grab bars, enlarged toilet stalls, accessible faucet controls);

(iii) Costs associated with providing accessible telephones (e.g., relocation of phones to an accessible height, installation of amplification devices or TDDs);

(iv) Costs associated with relocating an inaccessible drinking fountain.