五洲招标网

Published date: 5 July 2024

Contract summary

Industry

Additives for cements, mortars or concretes - 24957200

Concrete pumps - 42122190

Concrete or mortar mixers - 43413000

Location of contract

North West

Value of contract

£250,000 to £500,000

Procurement reference

C4N82188495

Published date

5 July 2024

Closing date

26 July 2024

Closing time

12pm

Contract start date

31 July 2025

Contract end date

31 August 2025

Contract type

Works

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

No

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Description

CMP2/1a Greek street carries the two lane Greek Street Roundabout over the five track electrified West Coast Main Line, in Stockport City Centre. Two Tracks run below the East Span with the three remaining tracks below the west span. The bridge was originally a tunnel but was reconstructed as an overbridge in 1958.
The Two span Simply supported superstructure consists of precast post-tensioned prestressed concrete deck beams and in-situ reinforced concrete deck slabs. Gaps between the beams are formed by in-situ reinforced concrete. The intermediate support is provided by a reinforced concrete crosshead beam, columns and foundation slab. The deck beams are post-tensioned transversely.

Parapets for the structure are comprised of brickwork.

The bridge has a skew spans of 9.14m on the east and 13.99m on the west side, at angles of 13 degrees.
The carriageway width varies from 9 to 13m due to the layout of the roundabout. Footways are provided adjacent to the north and south parapets of the structure, with varying widths. Trief Kerbing with a mounted pedestrian guardrail are present to separate pedestrians from the carriageway.

Greek Street Bridge is a two span post tensioned structure in which the latest PTSI assessment concluded that the structure is understrength and overstressed. Engineering standard NR/CIV/025 has been used to manage the substandard structure in the short term with additional monitoring in place. Specific elements of concern included exposed concrete reinforcement which has begun to corrode on the deck soffit, seepage of water onto the soffit which will cause degradation to accelerate further. The most recent assessment report stated that the risk of failure was 'High' to 'Very High' and that deck replacement is required in 2025, otherwise the structure would need to be closed to road traffic until completely reconstructed, due to the overstress and deterioration it would not be safe to operate.

The project proposal is to replace the existing bridge with a single span removing the central pier in a 21 day core possession in August 2025. This will require alterations to the existing OLE equipment that runs underneath the structure. The highway will also be closed for a significant period whilst construction works are undertaken to replace the bridge - circa 50 weeks.

The deck construction works will commence once all beams are landed, connected and waterproofing membrane is installed. The sub-contractor will then be responsible for setting up all formwork and erecting steel re-inforcement (Opportunity to construct in cages may arise during design development, but please assume in-situ at this stage). Supply all associated concrete. Sub-contractor to then provide 2no. concrete pumps for duration of their pouring works. Sub-contractor to also finish concrete.

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More information

Links

https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=82188497

Tender notice

Please follow this link to view the notice.

Additional text

Relevant due diligence checks will be carried out.
Construction Line
RISQS
SSIP
Financial Checks

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How to apply

Follow the instructions given in the description or the more information section.

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About the buyer

Contact name

Louise Day

Address

Hiview House, Highgate Road
London
NW51TN
UK

Telephone

07849630497

Email

louiseday@murphygroup.co.uk

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