My wife´s 97 Escort has only 67K, so I guess I am safe for a while. Owner´s manual does not mention timing belt. Factory repair manual show how to replace but says nothing about how often; same with Chilton. Very strange that Ford makes no recommendation about replacing something that will wreck your engine if it breaks! Just had t-belt replaced on my daughter´s ´93 Escort (1.9L) at 107K.
Years ago I had t-belt replaced on ´83 Honda Accord at 60K because of reports of breakage before factory recommended replacement at 90K. Same thing with Audi: they used to recommend 90K on 12 valve A6s, now recommend 60K because of premature breakage (and the 12V A6 is an interference engine, as was the old Honda 1.6 liter). But at least Honda and Audi warn customers to get it replaced.