Clyde Bridge Replacement Project

Tender description

Following a Clyde Bridge Replacement Project feasibility report South Lanarkshire Council has made the decision to replace the existing structure with a single span proprietary steel superstructure. Following a Clyde Bridge Replacement Project feasibility report South Lanarkshire Council has made the decision to replace the existing structure with a single span proprietary steel superstructure. A detailed design was carried out and the Council require a fully qualified specialist single Contractor to undertake the construction of a 90 metre single span proprietary steel bridge to replace the existing reinforced concrete bridge structure. The proposed structure includes a 4.2m wide carriageway with an additional footway of minimum width 1.05m. The new structure will be constructed off line of the existing bridge. The proposed carriageway on approach to the structure will follow a new alignment and will include new approach roads to the north and south which will tie into the existing C29 Pettinain Road. The proprietary bridge will be supported on reinforced concrete abutments which, in turn, will be supported by piled foundations. On the north approach the structure will also include wing walls which will not be connected to the abutment and will behave as retaining walls. On the south approach the structure will include wing walls which will not be connected to the abutment and will behave as retaining walls and a cattle creep structure. The superstructure is proposed to be launched from the south abutment and a launching area for this purpose will be built. In addition to this the design also includes for the replacement of a cattle creep structure located approximately 350m south of Clyde Bridge and the infilling of a culvert located approximately 270m south of Clyde Bridge. The works will broadly comprise; - Undertake necessary ecology surveys and any required mitigation works; - Undertake de-commissioning/re-routing by all relevant utility providers, relevant public bodies and entities (Scottish Water, BT, and SEPA); - Carry out clearance; - Infill culvert No.2 with foam concrete; - Demolish cattle creep No.3; - Build cattle creep No.3 replacement precast concrete box; - Demolish part of reinforced concrete cattle creep No.1 (south abutment) keeping the services through the existing bridge in operation; - Construct sheet piled retaining walls located in front of the north and south abutments; - Build reinforced concrete abutments considering an opening to the south abutment; - Construction of launching area at south abutment; - Build the steel bridge in sections at launching area; - Launch the bridge to its final position; - Expose services in bridge deck and divert them as agreed with utility providers; - Carry out demolition and removal of existing bridge deck and abutments; and - Surfacing bridge approaches, parapets, fences and apply finishes. This procurement exercise will be conducted under the NEC3 Engineering and Construction Contract - Option B.