The bridge named after St Helen's rugby league hero Steve Prescott has opened this evening.
It brought fans to their first home game of the season against Hull.
Steve Prescott lost his long battle with cancer in November last year.
His widow and sons were there to see the opening.
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The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Prime Minister Theresa May announced the decision from Downing Street.
In her message Theresa May praised the "inspirational bravery" and "unbreakable spirit" of Mancunians in the wake of the blast.