Costing National Highways more than £40m, the roundabout junction above the M49 was built in 2020.
The motorway was closed in both directions near Avonmouth, causing significant delays.
Waitrose plans to hire around 550 staff to work at its new warehouse in Avonmouth, Bristol.
Avon Fire and Rescue Service currently share their HQ with Avon and Somerset Police in Portishead.
The closure will allow for the next stage of road improvement works to begin.
The city council says addresses found in the huge pile of waste could lead to prosecutions.
Councillors dropped the idea a decade ago as it was deemed too risky but are now reviewing it.
Tony Heath's crimes left one of his victim suffering regular nightmares, a court hears.
It is estimated the new pipeline will save 145,200 of HGV miles a year.
