Question: Pinellas connects with Manatee County via the bridge that has a length of how many feet?
Sentence (from "Sunshine Skyway Bridge"): The Bob Graham Sunshine Skyway Bridge, known to locals as the Sunshine Skyway Bridge or more casually the Skyway, is a bridge spanning Tampa Bay, Florida, with a cable-stayed main span, and a total length of 21,877 ft .
Relevant evidence: Yes