With a draw also good enough for the visitors to qualify for the playoffs, the game was played at a pedestrian pace with neither side so much as registering a shot on target.
However, the anti-climactic end to the season did not mask Herrera's delight at taking the Galicians back into the top division after a five-year absence.
He told Marca: "It is a pleasure to coach a squad like this. It's true that this team is a group of friends, a group that unites to support each other.
"This season we have the fortune of having two or three veteran players that have contributed a lot.
"The fans deserve to see their team play against Real Madrid or Barcelona. Moreover, next year we will again have the derby against Deportivo La Coruna, so Galician football is the winner from our promotion.
"I will never forget this image. It has been amazing to see Balaidos full like this."
Deportivo had already secured their promotion last weekend but ensured they went up with a record points total of 91 with a 1-0 win at Villarreal B.
Valladolid, who could have gone up had results gone their way, lost 3-1 at home to Guadalajara to finish third with Hercules and Alcorcon filling the other two spots in the playoffs.
Cordoba will host Valladolid and Alcorcon travel to Hercules for the first legs of the playoff semi-finals on Wednesday.