Bridges, subways and walls
Cox’s Walk footbridge
The Cox’s Walk footbridge was built around 1865 so that people could cross over the railway line which is in a cutting. The bridge was fully restored to its original design, using teak and iron, in 1906. The railway line was decommissioned in 1954, and the bridge fell into disrepair.
Based on tree age estimation techniques (see Arboricultural Report forming Appendix A to Alternative Options Technical Report – link below) and the construction activities associated with the bridge, it is likely that the two oak trees on the western bank, located either side of the bridge, were planted between 1865 and 1905.
Cox’s Walk footpath and the bridge form part of the formal adopted public highway network. Consequently, we have a formal legal duty to keep the footbridge open as far as reasonable practicable whilst allowing for our duty of ensuring the public are kept safe.
Our 2018 Assessment Report (as below) said the footbridge was in a hazardous condition because the supporting walls at each end of the bridge were at risk of failing. The report said that this posed little risk to the public, provided works to fix the problem were carried out within 18 months. Consequently, the footpath was allowed to remain open and we scheduled refurbishment of the whole bridge, for October 2019. But for various reasons, including ensuring that all practical construction options had been explored, this has been delayed.
The risks associated with the bridge’s supporting walls have increased with the passage of time. They have also been compounded by the recent discovery of further significant safety issues concerning the bridge’s timber parapets and handrails; as identified during a recent inspection (see below). These two problems have now led to the closure of the bridge, on safety grounds.
We planted 15 replacement oak trees, in preparation for the original works, which proposed the full replacement of the supporting walls on either side of the bridge. This unfortunately required the removal of the two oaks trees on the west side of the bridge, in order to provide safe working conditions.
However, the works were delayed because of significant public interest concerning the loss of the oak trees, which included a petition with more than 2,000 signatures. So we decided to put the planned works on hold, and see if there was any way we could preserve the trees.
Alternative construction options
We commissioned a report to investigate alternative construction options, which would maintain the oak trees. However, no practical alternatives to the current proposal were identified. Two options were worked up, but they were significantly more expensive than the original, proposed solution and would change the appearance of the bridge (see below).
Closure and diversion (pdf, 1.1mb)
Moving the bridge would involve building a new structure and because we have a legal duty to keep the footbridge open, we’d have to apply to the Magistrates Court for a ‘stopping-up order’, in order to formally close the existing footbridge. To secure a ‘stopping-up order’, we’d have to prove to the Magistrates that the existing route is either unnecessary or that any alternative route would be better. Neither is applicable in this case, which means we would likely fail to secure a ‘stopping-up order’ and be required to maintain the current route over the existing bridge.
In addition, building a new bridge further along the track and creating a new footpath from it would necessitate the removal of a significant number of trees. A new footbridge and the associated footpath would be well in excess of £500,000.
Unfortunately, no short term repair work can make the bridge safe, so it has been closed until full refurbishment works can be completed.
The dilapidated condition of the footbridge means that no temporary structure could safely be constructed next to it. Constructing support for and a footpath from a temporary footbridge would also necessitate the removals of trees and vegetation.
If the council proceeds with our original plans, this would entail the replacement of the supporting walls (and full repairs to the current damaged parapets) being carried out in September/October 2020. This unfortunately would require the removal of the two adjacent oak trees. Those works would take approximately three to four months to complete, depending on progress and weather conditions. However, we fully recognise that members of the local community have contacted the council to express concern about these proposals. We'll therefore be consulting and fully engaging with the local community in the period until August to explore whether there are further options open to the council which will enable the two oak trees to be retained.
Current closure of the footpath over the bridge
The current temporary closure of the footpath across the bridge will need to remain in place until the permanent works are completed. However, the council is currently looking at possible access options that will protect the environmentally sensitive area below the bridge, which according to the London Wildlife Trust is at risk of severe damage by walkers taking a shortcut down the slope and onto the trackbed.
With respect to the closure, local access either side of the bridge is maintained but anyone wishing to travel the full length of Cox’s Walk will be diverted via Sydenham Hill and Lordship Lane.
Should you have any queries regarding the above, email firstname.lastname@example.org.
The significant amount of public interest in the bridge works and the associated potential removal of the two oak trees is wholly recognised and appreciated. Consequently, further public engagement will be undertaken before any works are carried out. The timescales for the current proposed works will also allow any independent options to be considered by any interested parties. We will fully support and assist with any such initiatives should any previous technical, geotechnical or survey reports be required.
The background documents for the project are available are as follows:
- 2018 assessment report (pdf, 3.4mb)
- Cox’s Walk footbridge refurbishment - general inspection report link (pdf, 7.4mb)
- Cox’s Walk footbridge - alternative repair options (including arboricultural report - Appendix A) (pdf, 4.7mb)
- Bat tree assessment (Nov 2019) (pdf, 2mb)
- Fact sheet (pdf, 196kb)
Alternative design provided by campaigners for the retention of the two oak trees
An alternative preliminary design has been submitted by the campaigners for the retention of the two oak trees. An arboricultural report has also been submitted by the campaigners (see attached report). The alternative proposal has been comprehensively reviewed and a technical report prepared on the practicality and feasibility of the proposal (see attached report). If you have queries or comments on the attached report, email us.
Consultation on alternative proposals
The council highway and arboricultural officers held an online local ward forum meeting, chaired by your local ward Councillors. This took place on Tuesday 22 September, where any queries on the report and the overall project were addressed. Further to the meeting, the council has received further questions on the review of the proposal. Attached are the questions (pdf, 433kb) and the responses (docx, 30kb) to the queries.
- General Arrangements (pdf, 776kb)
- 3D Views (pdf, 2.4mb)
- Cox's Walk Footbridge ECP (pdf, 242kb)
- 60493385-C0347-REP-006-B (pdf, 6.7mb)
- Arboriculturist report F July 2020 (pdf, 8.2mb)
- Engineering Calculations for Cox's Walk footbridge alternative repair proposal July 2020 Rev B (pdf, 1.3mb)
We remain committed to the decision made last year to deliver a scheme that honours the Tree Protection Orders (TPOs) put in place by our Planning team. Made for the two mature oak trees adjacent to the west side of the footbridge. The trees are protected and their future is secure.
The footbridge itself has remained closed to the public whilst work is done to consider various options and determine a solution. This solution will also addresses the essential repair works to the footbridge.
We have thoroughly reviewed all the feasible options to refurbish the footbridge using the following criteria:
- restoring the bridge in the form that meets its historic status
- retaining the two oak trees adjacent to the western abutment
- minimising removal of trees for the access for plant and machinery
- minimal effect on the fauna in the area
- ideally ensures costs are minimised as practicable as possible
The review of the site, together with additional site inspections has now successfully established a permanent solution that covers the main objectives and criteria, this is as follows:
- full refurbishment of the footbridge with additional steel portal frames located in front of the existing abutments and wing-wall construction to the side of the bridge. The visual context of the upper wooden frame of the bridge remains un-altered and intact
- the frames will be supported on screw pile foundations to mitigate impact to the root network of the two mature oaks
- this proposal retains the two oak trees adjacent to the bridge in line with the decision made in 2021
- this proposal also includes the provision of a permanent concealed maintenance ramp for the bridge for these works. This will support all future maintenance of the structure in the years ahead, to ensure no further impact on the mature oaks, the bridge structure and the woodland bed once these works are completed and further planting is completed
The next step is to undertake a public information and engagement meeting, which will be used to advise all interested stakeholders on the details of the proposal to be implemented. It is proposed to hold the meeting in May/June. All stakeholders will be contacted in advance and local residents invited to attend.
The intention is the works will be undertaken in October 2022 following the end of the bird nesting season.
Page last updated: 30 March 2022