Extra signs and better traffic management is being brought in around the Tunnel this weekend, to avoid the gridlock seen last Saturday.
The tunnel will be closed westbound again from this evening ((7pm) until Monday morning (6.30am)
The government says it has reviewed the impact that had on traffic flow.
Motorists approaching from the east will be encouraged to stay on the coast road and use Havre des Pas, Mount Bingham and Commercial Buildings.
Those who do head onto Route du Fort will be directed either south along Green Street - in a reversal of the usual one way system - or north past the multistory car park and into town.
Disruption will continue throughout July as a new sewage pipe is laid to allow waste to travel from the east of the island to the Bellozanne Treatment Plant.
The full list of closures:
Jersey residents' data to be shared with credit check agencies
Jersey launches world-first heart failure treatment trial
Fundraising hopes to give girl (3) with rare condition 'best possible start'
Gas escape in St Helier 'minor' and 'posed no safety risk'
Four vehicle collision on the Espalande
Homes evacuated after gas smell reports
New sculpture trail teased
Jersey Police Chief appointed Chair of Opera House
