Two goals up inside twelve minutes through Tom Knighton and Mitchell Page Mangotsfield went in at half time leading three nil after Marcus Duharty
's strike a minute before half time.
Despite creating a number of second half chances Mangotsfield had to wait until the eighty minute mark to add a fourth, Duharty heading home for his econd of the match. Bridgwater's goal in added time was scant consolation after being secind best for much of the match.
Phil Bater was forced into making two changes to the starting line up due to the unavailability of Gary Colborne and the withdrawal of Sean Seavill due to injury. Mitchell Page was recalled after serving a four match ban and loan signing Marcus Duharty
In a positional switch after being used in midfield on Saturday Neil Arndale
was switched to right back after Alex Hoyle filled in for Gary Colborne at centre back.
Mangotsfield showed early intent when going close to an opener inside three minutes, Marcus Duharty
latching onto a through ball to lift the ball over the advancing Sam Hutchings only for his goalbound effort to be headed clear by the covering Josh Turner.
Minutes later a deep cross from wide on the left was met by Mitchell Page who should have done better when heading tamely wide.
Mangotsfield were rewarded for a positive opening by taking the lead on ten minutes thanks to Tom Knighton's ninth of the season.
The goal in no small part was down to Karim Rendall's determination to win the ball in the heart of the area and then drill the ball across the six yard box towards Tom Knighton who guided the ball home.
With supporters still celebrating Knighton's opener a second goal came on twelve minutes through Mitchell Page whose strike crashed against the bar before bouncing down and then trickling over the line.
On eighteen minutes after a quickly taken free kick Alex Hoyle went close with a strike from distance which flashed a couple of yards wide.
At the midway point of the half loan signing Marcus Duharty
went close opening his account after Neil Arndale
's run and cross from the right was met by the twenty five year old striker whose near post header fizzed a yard over.
Minutes later Geraint Bater's speculative strike from fully forty yards appeared to surprise Bridgwater goalkeeper Sam Hutchings who went low to his left to parry a shot which looked to be heading wide.
The best chance for a Bridgwater side that created very little during the first half fell to Tom Hurley after former Mangotsfield player Aaron Cornwall came inside from the right beating several challenges before finding Tom Hurley who shot just over.
A third for Mangotsfield came on forty one minutes after a sweeping move ended with Tom Parrinello
working the ball from the left inside to the feet of Marcus Duharty
who took one touch, moving the ball to his right before placing the ball past the outstretched arm of Sam Hutchings and inside the bottom right corner.
The opening twenty minutes of the second half were the most evenly contested of the match as Bridgwater offered more of a threat.
Four minutes after the restart Danny Greaves
was called upon for the first time when another ex Mangotsfield player, Danny Wring tested Greaves with a shot from thirty yards.
At the other end given time and space Geraint Bater drilled an effort two yards wide and this was quickly followed by Harley Purnell side footing over from twelve yards after good work down the Bridgwater right by the impressive Karim Rendall.
Bridgwater could have pulled a goal back on fifty four minutes after a throw in on the left was flicked onto Dave Pearse who with sight of goal pulled his shot from the left edge of the area wide of the left hand upright.
Chances continued to be created at both ends, for Mangosfield Karim Rendall made ground on the left flank before squaring the ball inside to Marcus Duharty
who after glancing goalwards attempted to chip Sam Hiutchings but his effort went a couple of yards wide of the far post.
Shortly afterwards Danny Greaves
was called upon to parry Matt Thorne
's free kick, Greaves doing well in the slippy conditions.
The combination of Karim Rendall and Marcus Duharty
proved effective once again, this time at the midway point of the half a fine passing move ended with Rendall playing the ball back inside two Duharty who went close with a low shot which skidded wide of the right hand upright.
The first of Mangotsfield's three changes came on seventy three minutes as Daine O'Connor replaced Mitchell Page. This was followed four minutes later by the introduction of Jake Slocombe who came on for captain Geraint Bater.
The fourth for Mangotsfield came with ten minutes left to play. After being awarded a free kick for a foul on Daine O'Connor on the right side of the area, Harley Purnell whipped the ball into the heart of the penalty area where Marcus Duharty
planted a firm header past Sam Hutchings for his second of the match.
The last of Mangotsfield's three substitutions was made on eighty one minutes when Aysa Corrick took over from two goal Marcus Duharty
In added time Bridgwater pulled a goal back through Graham Mercieca's bullet strike from the right corner of the penalty area which flew in at the near post.
Line up : 1. Danny Greaves
, 2. Neil Arndale
, 3. Tom Parrinello
, 4. Harley Purnell, 5. Alex Hoyle, 6. Lee Marshall
, 7. Mitchell Page, 8. Geraint Bater, 9. Tom Knighton, 10. Marcus Duharty
, 11. Karim Rendall.
Substitutes : 12. Daine O'Connor, 14. Aysa Corrick, 15. Jake Slocombe.
Officials : Mr A. Raggett, Mr C. Barter, Mr N. Sykes.