Kings Crossroads will go live in the early hours of Wednesday morning, and marks the count down to the completion of the Weymouth Transport Package junction improvements.
The Esplanade junction will be live early next week and the Queen Street junction and Jubilee Retail Park junction will be switched on in the next two weeks.
King Street will reopen to two-way traffic by Friday 22 July.
The project site offices on Swannery Car Park will start to be removed on Monday 25 July.
The closure of Queen Street is being extended to midnight on Saturday 2 July.
King Street will also be closed between The Esplanade and Park Street from the early hours of Wednesday 29 June to midnight on Saturday 2 July.
Vehicles will be able cross King Street to and from Gloucester Mews and Crescent Street, with Crescent Street becoming two-way during the closure.
Drivers will be able to access the Esso Garage and Upway Street from the Kings junction end of King Street.
The train station should be accessed via Astrid Way and Queen Street.
Park Street will be unaffected by the closure and pedestrian access will be maintained along King Street at all times.
Work will start on Monday 18 April, for four days, to install a mini-roundabout at the Portland Road junction with Wyke Road.
As a result of changes at the Wyke Road junction with Rodwell Road some northbound traffic from the Portland direction will naturally be re-routed along Wyke Road towards Rodwell Road (Boot Hill), or down Lanehouse Rocks Road.
To ensure that drivers can use these routes as a viable alternative, the junction of Portland Road with Wyke Road (cemetery junction) is being improved.
Stop/go boards will be used outside of peak traffic times on the Monday and Tuesday, and on the Wednesday and Thursday nights a short section of Portland Road will be closed.
During Friday 28 January the signals at Harbour Crossroads will go live.
Next week, traffic engineers will be closely observing the signals and making adjustments as necessary and over the coming months the two new junctions will be monitored to ensure they are working together.
Junction improvement work has also finished on Boot Hill, and over the next few weeks these junctions will also be ‘commissioned’ by Siemens.
Chickerell Road and Wyke Road will remain one-way at their junction with Boot Hill until their signals are switched on.
From Wednesday 26 January – for around five months – King Street will be one-way.
Traffic will only be able to travel down King Street towards Swannery Bridge.
Because of the narrow width of the road, closing one lane is the best option so that workers have enough space to carry out the improvement work along King Street and at its junction with The Esplanade.
Drivers will be able to turn right into the station forecourt from King Street, drivers will also be able to turn right into the Esso garage, and Crescent Street and Queen Street will become right turn only out onto King Street.
First buses will be able to access the depot as usual.
Work will continue in the Boot Hill and Harbour Junction area over the weekend, with Harbour Junction closed 6pm Sunday 9 January to 6am Monday 10 January.
The diversion route will be along Granby Way – Chickerell Link Road – Chickerell Road – Lanehouse Rocks Road – Portland Road – Buxton Road – Rodwell Road.
On Monday 10 January, Boot Hill will revert back to the one-way system which was in place last year, with Hope Square also one-way for local traffic.
The cold weather has put this work behind programme and to get it completed as soon as possible workers need greater access to the area.
There will also be three-way temporary traffic lights at Harbour Junction. These measures will be put in place before the Monday morning peak traffic and will last 14 days – to Monday 24 January.
Work to construct the central island of Harbour Junction will begin on Wednesday 5 January 2011.
Over a four week period, four-way traffic lights will be in place at the junction until the island construction and surfacing work is complete.
Due to the position of this final island, the nature of the work and for the safety of the public, it is essential that these traffic lights are in place 24 hours a day, seven days a week.
Between 6.30am and 8pm the lights will be manually controlled to ensure the least possible disruption to the public. Outside of these hours night-time maintenance crews will manually control the lights as required.
Westham Crossroads signals will be switched on tomorrow.
The signals have been programmed with traffic flow information collected over the last two years, and once switched on they will record information about traffic going through the junction and become gradually more efficient.
Vehicle detectors buried in the road on every lane of the junction will measure traffic flows and allow more green time to be given to the busier approaches.
Boot Hill will reopen to two-way traffic on Thursday 9 December, but work will continue on the junctions.
This means that Wyke Road will need to be closed at its junction with Boot Hill to ensure the safety of motorists and workers. There will also be times when Chickerell Road is closed.
Despite working double shifts to stay on programme the extreme weather has prevented essential work from taking place, which means that the Boot Hill junctions and Harbour Junction will go live in the New Year.
The length of Westwey Road will be closed on 2 & 3 November between 8pm and 6am so that reconstruction work can be carried out on the road at either end.
While the road is closed, traffic island work and some surfacing will also be carried out at Harbour Junction under two-way traffic lights.
Emergency vehicles and buses will be guided through the area.
