DESCRIPTION
The Client had already purchased 4 moulded FRP composite footbridges from Lifespan Structures since 2018 recognising that for a similar purchase price to a steel bridge the Lifespan bridge significantly reduces installation costs and future maintenance costs. For Albany Park Lifespan designed and delivered 2No. bridges each 12m long. One bridge was a pedestrian bridge 2m wide and the other one was for pedestrians and service vehicles 2.5m wide. Each bridge had galvanised steel, powder coated bespoke parapets to the Client’s design.

The Client had recently purchased additional land to extend an existing park and wanted two footbridges across a small stream to gain access to the new land. Lifespan Structures recommended an FRP composite bridge supported on screw piles with a timber parapet to compliment the environmental location. The Client commissioned Lifespan to undertake a topographical survey, and borehole survey for the proposed locations. Lifespan then provided an Approval in Principle (AIP) for the Client and proceeded to design the two bridges followed by manufacture and delivery to site ready for installation.

Off site production allowed us to continue with this project during the lock down.  Once restrictions were eased the existing bridge was removed and the foundations upgraded by CRL working for Kent Highways, before the new bridge was installed in June. KCC Cabinet Member for Highways and Transport, and Member for Tonbridge, Michael Payne said:
“This work was carried out to provide a strengthened and refurbished bridge to ensure it continues to be safe river crossing for the public to use. “The original deck was made from railway rails with a type of expanded metal mesh reinforcement, but unfortunately it wasn’t able to handle the number of people using it.

Very few people in the construction industry are aware of the significant commercial opportunity from identifying R&D processes and expenditure within the business. If a contractor has changed or improved a traditional process, and applied it to the project, then the resources involved may qualify as R&D expenditure and contribute to a claim. By offering an alternative construction technique using a Lifespan Structures composite deck, clients can often qualify for an R&D claim which will reduce the tendered costly of the scheme or enhance the profit margin.

The English Version of CUR96 is now available! CUR96 Recommendation describes the principles for the design of fibre-reinforced polymers (FRP)
It is available for download at https://crowplatform.com/product/crow-cur-recommendation-962019/
Please do contact us directly if you would like a to understand more about the content of this document.

The DMRB was updated by Highways England just before the lockdown started. We were probably all distracted from noticing this at the time. The technical changes were substantial, especially regarding FRP bridges but the structure of the suite of documents changed. A summary of these changes can be seen at (https://standardsforhighways.co.uk/dmrb/help#new-structure)
One key change for us is the replacement of BD90/05 with CD368. CD368 updates the approach to FRP bridges. The new approach is now quite closely aligned with current European guidance documents.

The construction industry is committed to reducing the environmental impact of its activities. The Construction 2025 joint strategy from the UK Government and industry, working in partnership, sets a vision, which includes 50% lower emissions, 33% lower costs and 50% faster delivery. Using FRP composites in place of steel and concrete for bridge construction will deliver this vision now. The carbon and energy embodiment is significantly reduced at the construction stage and still further during the 100-year minimum service life.

This Public Rights of Way (PROW), 2 span bridge was installed in December 2018. The lightweight nature allowed easy installation in this remote location during the winter months and moulded deck technology means long term maintenance will be reduced to a minimum.  The total length of the bridge was 14m and 0.905m wide between the handrails.  The handrails were attached to the outside edge of the bridge to minimise the overall width of the structure to suit site constraints.  The project demonstrates that FRP bridges can be a cost effective, durable alternative to traditional construction methods for small remote structures.

The existing skewed reinforced concrete footbridge had come to the end of it life, so an FRP Replacement was selected to provide reduced maintenance in the tree enclosed environment over the Gutter.  Following completion of new abutments and associated retaining walls, the lightweight, preformed, replacement allowed fast and simple installation on site using a lorry mounted crane, to both transport and lift the bridge into place.  The colour scheme was selected to match the clients requirements.

Lifespan Structures FRP cycleway Bridges on Horsey Way, Eastbourne, were highly commended at the 2018 ICE South East England Engineering Excellence awards in the best infrastructure category..no mean feat when going up against much larger schemes, congratulations to all involved in the project! The new Horsey Cycleway crosses a wetlands area where two footbridges with service vehicle access were required to cross waterways on the route.  Due to the poor ground conditions the bridges needed to be lightweight to aid installation and reduce the abutment loadings.  The client, had already used an FRP composite footbridge on a previous scheme and commissioned Lifespan Structures to design and manufacture the two FRP composite Footbridges.  The bridges were both 3.0m wide  and had clear spans of 14.8m and 10.6m with respective deck weights of 5600kg and 3350kg.