A1 Trunk Road / A421 Trunk Road / A428 Trunk Road, Bedfordshire and Cambridgeshire - Temporary Restriction and Prohibition of Traffic and Pedestrians Order

ROAD TRAFFIC REGULATION ACT 1984 - SECTION 14(1)(a) AND (7), AND 15(2) AND PARAGRAPH 29(1) OF SCHEDULE 9 THE A1 TRUNK ROAD (SANDY TO WYBOSTON), THE A421 TRUNK ROAD (RENHOLDINTERCHANGE TO A1 BLACK CAT ROUNDABOUT) (BEDFORDSHIRE) AND THE A428 TRUNK ROAD (WYBOSTON, BEDFORDSHIRE TO HARDWICK, CAMBRIDGESHIRE) (TEMPORARY RESTRICTION AND PROHIBITION OF TRAFFIC AND PEDESTRIANS) ORDER 2024

NOTICE IS HEREBY GIVEN that National Highways Limited(a) has made an Order on the A1 and the A421 Trunk Roads in the County of Bedfordshire and the A428 Trunk Road in the County of Cambridgeshire to enable major construction of a three-tier junction and new dual carriageway between A1 Black Cat Roundabout and Caxton Gibbet Roundabout, including routine maintenance and all other associated works to be carried out in safety.

The works are expected last until December 2027, continuing on or after, Monday 4 March 2024.

The works will be carried out in phases using a combination of lane closures, traffic signals, full carriageway, slip road, footway and lay-by closures, width restriction, no overtaking and contraflow. Temporary mandatory speed limits will be in force at times in the interest of safety.

The restrictions and prohibitions will be applied only to the extent that is necessary for particular works to be undertaken and will only apply during such times and to such extent as shall be indicated by traffic signs.

For the purpose of this notice the A1 Black Cat Roundabout shall be referred to as Black Cat Roundabout.

The effect of the Order will be to –

1. Impose, for 24 hours daily, with no overtaking, a speed restriction of –

1.1 40 miles per hour, 50 miles per hour or 60 miles per hour on the –

•  A421 eastbound carriageway from 1140 metres west of Woodend Lane overbridge, Roxton to its junction with Black Cat Roundabout,

•  A421 westbound carriageway from its junction with Black Cat Roundabout to the entry slip road at Renhold Interchange,

•  A1 northbound carriageway from Tempsford junction overbridge to its junction with Black Cat Roundabout,

•  A1 southbound carriageway from the exit slip road at Wyboston junction to its junction with Black Cat Roundabout,

•  A428 eastbound carriageway from its junction with the B1040 at Eltisley to the entry slip road at Cambourne Interchange,

•  A428 westbound carriageway from Bourn (Broadway) overbridge to its junction with the B1040 at Eltisley,

•  circulatory carriageway of the A428 Caxton Gibbet Roundabout,

1.2 40 miles per hour or 50 miles per hour on the –

•  A1 southbound carriageway from Black Cat Roundabout to the exit slip road leading to Barford Road, Tempsford,

•  A1 northbound carriageway from Black Cat Roundabout to the entry slip road at Wyboston junction,• Circulatory carriageway of Black Cat Roundabout, and all slip roads within the lengths of carriageway described at 1.1 and 1.2 above.

2. Close (9pm – 6am), in phases, the –

•   A421 eastbound and westbound carriageways between Renhold Interchange and Black Cat Roundabout,

•   A1 northbound and southbound carriageways between Sandy Roundabout, Sandy and Wyboston junction,

•   A428 eastbound carriageway from Barford Road Roundabout, St Neots to the entry slip road at Cambourne Interchange,

•   A428 westbound carriageway from the exit slip road at Hardwick Interchange to Barford Road Roundabout, St Neots,

•   slip roads within the lengths of carriageway described at 2 above, and

•   (close for 24 hours daily) the footway adjacent to the A1 northbound carriageway from  10 metres south of School Lane Roxton to 461 metres north of Chawston Lane, Chawston.

Diversions, for closures between –

•   A421 Renhold Interchange and Black Cat Roundabout – eastbound traffic via St Neots Road, Bedford Road and Roxton Road, to join the A1 at Black Cat Roundabout; westbound vice versa,

•   A1 Sandy Roundabout and Black Cat Roundabout – northbound traffic via the A603 and A421 to re-join the A1 at Black Cat Roundabout; southbound vice versa,

•   A1 Black Cat Roundabout and Wyboston junction and A1 Sandy Roundabout to Wyboston junction – northbound traffic via A1 southbound to A1(M)J9 then A505, A1198 and A428 to re-join the A1 at Wyboston; southbound vice versa,

•   A428 Barford Road Roundabout and Caxton Gibbet Roundabout -eastbound traffic via A428, A1, A14 and A1198 to re-join the A428 at Caxton Gibbet Roundabout; westbound vice versa,

•   A428 Eltisley to Caxton Gibbet Roundabout – eastbound traffic via B1040 and A1198 to re-join the A428 at Caxton Gibbet Roundabout; westbound vice versa, and

•   Caxton Gibbet Roundabout and Cambourne Interchange – eastbound traffic via A1198 and A1307, to join the A14 at J24 and continue or leave the A14 at J32 to return westbound; westbound traffic via A428, A1303 and M11 southbound to exit at J12 then via A603 and A1198, (non-motorway traffic will continue via A1303 to pick up diversion as above from A603).

During the footway closure, pedestrians will be directed to follow School Lane, High Street, Bedford Road and Roxton Road, then either, Chawston Lane or continue via Roxton Road to the Lane and vice versa.
Local diversions will be in place where necessary.

Contraflow will be in operation at times (for 24 hours daily) on the –

•   A1 northbound and southbound carriageways between Black Cat Roundabout and Wyboston junction, and

•   A428 eastbound and westbound carriageways between Caxton Gibbet Roundabout and Cambourne Interchange.

A vehicle width restriction of 2 metres will be in place at times on the lengths of carriageway described at 1 above, excluding the A421 westbound which will be 3.2 metres. Wide loads will either be held in a bay and escorted through or diverted via the diversions as above.
Access to property will be maintained at all times during the closures.

All lay-bys adjacent to the lengths of closed carriageway will be closed for 24 hours daily for the duration of the works.

The Order will revoke The A1 Trunk Road (Sandy to Wyboston), the A421 Trunk Road (Renhold Interchange to A1 Black Cat Roundabout) (Bedfordshire) and the A428 Trunk Road (Wyboston, Bedfordshire to Hardwick, Cambridgeshire) (Temporary Restriction and Prohibition of Traffic and Pedestrians) Order 2023 No 0931. The temporary mandatory speed limits (which will not apply to emergency service or special forces vehicles) closures (which will not apply to emergency service, traffic officer, works or winter maintenance vehicles) and diversion routes will be clearly indicated by traffic signs.

The Order will come into force on 4 March 2024 and may continue in force until the works detailed above have been completed.

Mrs D Mainstone, National Highways Limited
(a) Registered in England and Wales under company no. 9346363. Registered Office; Bridge House, Walnut Tree Close, Guildford, Surrey, GU1 4LZ.

General Enquiries relating to this notice may be made in writing to Lorraine Bennetts at  National Highways Limited, Woodlands, Manton Lane, Bedford, MK41 7LW, by email to  lorraine.bennetts@nationalhighways.co.uk or by telephoning 07712542001.