AbFly is very please to present to you the result of our crowd funded feasibility study investigating the construction options and cost estimations for the reintroduction of the passing loop at Bricket Wood. You can download the complete study or read the executive summary below.

Executive Summary

The report presents a number of options for the passing loop and develops two of them to a cost estimated solution. Both of these solutions present similar level of service and risks. Both options provide a passing loop at Bricket Wood with the aim that the train only has to stop a single time in normal operation. Thus this should not cause significant extension to the current journey time.

The largest financial risks are the cost for turnouts (points), electrification, signalling and additional track in both refined solutions. The estimated cost for the cheaper solution is £8.6m (with an 80% confidence) with the layout as shown in Figure 11. The second option is for a second platforms at Bricket Wood, opposite the existing one, which come in at an estimated £9.9m (with an 80% confidence) because of the additional ramps to get to the public footpath shown in Figure 4.

The cost estimations in the report more closely align with £7.8m for a passing loop at Penryn railway station in 2009 rather than the estimate from Network Rail of £15-35m for a passing loop to be installed on the Abbey Line presented in April 2016. We hope, as a result, it will be easier for us to champion funding for the loop to be installed.

This report is a first step and includes the details regarding the civil engineering and cost projections for a passing loop as we saw this as the fundamental question which needed to be answered. Our challenge is still to build the complete business case for which we are still championing match funding. This would enable us to commission the second half of the report and thus provide a complete business justification for investment. This would be the understanding of current usage, economic growth/demand forecasts, costs of second train and the overall commercial viability assessment.