A1 Leeming to Barton Upgrade to Motorway (A1M)

Case Studies

PTS Demolition & Dismantling Ltd have gained a reputation for successful bridge demolition having undertaken over 25 bridge demolition projects working to tight timescales in challenging conditions. Led by 2 Civil Engineers with experience of bridge construction, PTS Demolition & Dismantling is in a unique position to plan and execute specialist demolition works of this nature.

PTS Demolition & Dismantling Ltd have successfully completed the demolition of 10 bridge structures associated with A1 Leeming to Barton upgrade to Motorway within North Yorkshire.

All of the separate bridges were phased to suit the Main Contractors Programme. Much of the work required road closures to both side roads and the main carriageway, this meant weekend, overnight and round the clock working during main carriageway closures.

The organisational effort to bring all the plant and machinery to site, undertake the works and remove all the waste from site is immense. Forward planning, anticipation of potential problems, breakdown cover, moving machinery up to 50 Tonnes in weight and staff cover must all be considered like a military operation, even down to making sure everybody had enough food and water, as to find food at 4:00am on a Sunday morning proves difficult!

Client / Reference Details: A1L2B Carillion/Morgan Sindall Joint Venture

Value: £1.0 Million

November 2015 - Fort Road and Rail Bridges

Fort Road and Rail Bridges carried a side road and redundant railway to Catterick Garrison over the A1. Successive weekend closures each of 34 hours duration were required to the main A1 carriageway. A 500 Tonne crane was situated adjacent to the bridge and used to lift the 2 sections of the railway bridge onto road transport as these were to be re-used by a Heritage Rail Company. Each piece weighed 47 Tonnes. The road bridge had the concrete deck broken out and the steel beams removed. The debris was cleared and the main carriageway swept and reopened. The following weekend the A1 was closed again and the north and south abutments were broken out using 8no. excavators and breakers varying in size from 50 Tonne to 21 Tonne. 1200 Tonnes of debris was removed from site for reprocessing and reuse in the new works. Click on the Link to see the Video...Fort Road and Rail Bridges Video

March 2017 – Catterick South Bridge

Catterick South Bridge carried a side road over the now disused A1 carriageway. The newly constructed side road required closure with disruption to local traffic, therefore the demolition was planned during a 58 hour weekend closure. This structure was the most modern on this scheme and the most complex, it consisted of a reinforced concrete deck standing on 2 spans of reinforced concrete post tensioned beams with a central cast insitu post tensioned Tee section above the central pier. Temporary supports were designed, fabricated and fitted prior to commencement of demolition. Demolition commenced using 5no. excavators fitted with heavy breakers to progressively breakout the deck and beams. The central Tee section was toppled as one piece weighing 120 Tonnes and then broken up at ground level. Central pier and abutments were broken out, reinforcing steel broken from the debris and all 2000 Tonnes removed for recycling. The task required continuous work over 4 shifts of 12 hours duration each and was completed 12 hours early resulting in reduced local disruption, reduced noise and a very happy Client! Click on the link to see the video... Catterick South Bridge Video

November 2015 - Kneeton Manor Accommodation Bridge

Kneeton Manor Accommodation Bridge consisted of a single carriageway 4 span concrete bridge carrying a private access road over the A1. The demolition works were undertaken during a 16 hour A1 closure between 20:00 hours Saturday to 12:00 hours Sunday. 5no excavators and heavy breakers were used to break out the bridge deck, concrete beams and piers. During demolition an asbestos cement pipe encased in the concrete deck needed carefully removing before demolition work could continue. All material was removed from site on road wagons for reprocessing off site. The demolition and debris removal was achieved within the planned closure period and the A1 reopened on time.

November 2015 - Brompton North, South and Catterick Rail Bridges Phase 1

Following the reconstruction of Brompton North, South and Catterick Railway Bridges (Phase 1), all traffic was diverted onto the new bridge decks which enabled the remaining old north bound decks to be demolished. As the A1 traffic was now partially on the new construction this gave us increased working space, this permitted working during daytime with no requirement for main carriageway closures. There were residential properties within 50 metres of the site requiring timed execution of noisy activities.

February 2016 – Brompton North, South and Catterick Railway Bridges Phase 2

October 2016 – Tunstall Road and Manor Farm Bridges

Tunstall Road and Manor Farm Bridges carried side roads over the main A1 carriageway. Demolition required the breakout of the concrete deck, removal of steel beams and total removal of the abutments. Main carriageway closures were not required as the A1 had been diverted onto the new construction some 200 metres to the west of the old A1. The concrete decks were broken out using 50 Tonne excavators and heavy breakers, the steel beams were removed and cut up to be reprocessed and the abutments broken out to the required level. All material was crushed for reuse.