Rational values of the Riemann zeta function

We prove the existence of a constant C such that for any D?3 there are at most rational numbers s with 2<s<3 and denominator at most D such that ζ(s) is also rational with denominator at most D. This is done by combining elements of the works of Bombieri-Pila, Pila, and Surroca with a new zero estimate.