The question is somehow incomplete. What is "an s-parameter"? S11? A single frequency S11 value can be directly converted into a RL or RC parallel or series equivalent circuit. But I guess that's not your question.
What R, L, and C of the transmission line are you asking about? A lossy TL model has 4 rather than 3 elements (series L and R, shunt C and G). At least R and G are frequency dependent.
Z0 and electrical length can be extracted from multiple frequency S11 points.