With the weather mess at IAH yesterday evening, the captain announced that winds limited take-offs to one runway. We waited 45-50 minutes in a 2-mile queue for take-off.

IAH has multiple parallel runways, so if planes must takeoff against the wind, shouldn't IAH have at least 2 runways oriented along the same axis?

Would the other parallel runway be restricted to landings, thereby limiting take-offs to 1 runway?