Phil Brown made one change from the side that lost to Millwall in the Johnstone’s Paint Trophy, with Noel Hunt coming in for Kevan Hurst.
Blues started on the front foot against Bury, who came to Roots Hall occupying 7th position in the League One table.
David Worrall marauded down the flank before crossing from David Mooney, but the number nine could only blaze a volley over the crossbar.
Bury looked dangerous on the counter, and threatened the Southend goal in the 10th minute when Danny Rose nodded over from inside the six-yard box.
Noel Hunt then headed over the bar from a Jack Payne cross, after Ben Coker’s initial delivery from a free-kick was cleared by Tom Soares.
Worrall then latched on to a long-throw from Ryan Leonard, finding space before firing just inches wide of the post.
Southend continued to put the visitors under pressure, with goalkeeper Daniel Bachmann called into action to deny an effort from Hunt.
The Irish frontman, who was playing for the first time since mid-September, remained undeterred and was rewarded for his persistence shortly after.
After Coker’s effort rebounded off of the crossbar, Hunt reacted fastest to pounce and score his third goal of the season.
Hunt extended his total for the season to four goals just 10 minutes later, when he capitalised on some questionable goalkeeping from Bachmann - under pressure from Adam Barrett - to spin and fire in the second goal of the game.
Bury boss David Flitcroft then elected to make his first change with just 33 minutes played, as Craig Jones replaced Danny Pugh.
Bury then pulled a goal back just four minutes before the interval, when Leon Clarke raced onto a through ball, beating Barrett for pace before sending a low left-footed effort past Dan Bentley and into the net.
Bury made a second change during the interval, with Jacob Mellis coming on in place of Tom Soares.
The visitors’ third change came in the 52nd minute, with Danny Rose being withdrawn to make way for Tom Pope.Bury were on top in the opening quarter of an hour of the second half, dominating the possession but failing to work many notable goal scoring opportunities.
Clarke nearly found the net again for the Shakers, blasting a low effort at goal after a free-kick routine that required quick reactions from Blues stopper Bentley.
Southend boss Brown then withdrew goalscorer Hunt after 66 minutes, with the former Reading forward replaced by Kevan Hurst.
Blues left-back Coker went into the book after 71 minutes, picking up a yellow card for pulling back Bury forward Pope as he looked to break on the counter.
A penalty was awarded to Southend in the 74th minute when a superb run from Payne saw him slalom past white shirts before being felled in the area by Nathan Cameron.
Mooney stepped up to take the spot-kick and sent Bachmann the wrong way with a low effort, to restore the two-goal advantage.
Worrall was then replaced by Glen Rea with 13 minutes of regulation time remaining.Three became four almost immediately, with Payne picking up a pass from a quick free-kick, advancing on goal before curling a stunning effort inside the far post.
Will Atkinson was the second name from the Southend team-sheet to go into the referee’s book, when he picked up a yellow card for a foul with 10 minutes remaining.
Joe Pigott came on in the 83rd minute, as Brown made his final change by opting to withdraw Mooney.The Roots Hall faithful were cheering every pass, as Blues toyed with Bury, before Hurst eventually sent a low drive into the arms of Bachmann.
There were five minutes of added time to be played, but despite having knocked the stuffing out of Bury there was no fifth goal.
Blues moved up to 7th in the League One table as a result, bringing their points tally to 34 points won from 21 games.
Southend United: Bentley; White, Thompson, Barrett, Coker; Payne, Leonard, Atkinson, Worrall (Rea- 77’); Mooney (Pigott - 83’), Hunt (Hurst - 66’)
Unused Substitutes:O’Neill, Prosser, Deegan Timlin.
Don’t forget we have two more home games to come over the busy festive season!
Bank Holiday Monday 28th December v Millwall, 1pm kick off
Saturday 2nd January v Doncaster Rovers, 3pm kick off
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