Twin Sails Bridge

The Twin Sails Bridge, a marvel of modern engineering and design, stands proudly in Poole, Dorset, England. This double-leaved bascule bridge is not just a functional infrastructure; it’s a symbol of Poole’s ambition and forward-thinking spirit. Connecting Poole Town Centre to Hamworthy, the Twin Sails Bridge is an essential artery for the town’s development and a striking landmark in its own right.

A Modern Marvel

Spanning the Backwater Channel, which links Holes Bay with Poole Harbour, the Twin Sails Bridge is a sight to behold. Its design is both practical and aesthetically pleasing, embodying the spirit of innovation. The bridge consists of a 10.8-metre wide carriageway with two vehicular lanes, two separate cycle lanes, and two 2.5-metre wide footpaths that cantilever from the main structure. This thoughtful design ensures that the bridge caters to all types of commuters, from motorists to cyclists and pedestrians.

The bridge’s most distinctive feature is its lifting span, which comprises two triangular leaves. These leaves span 23.4 metres between the main bearings and provide a clear channel of 19 metres when open. The lifting mechanism, powered by two hydraulic rams, can operate up to 15 times per day, taking just two minutes to fully open. This allows for smooth passage of boats through the navigation channel, ensuring that marine traffic is never unduly delayed.

An Architectural Gem

Designed by Wilkinson Eyre Architects and constructed by Hochtief (UK) Construction, the Twin Sails Bridge is a testament to cutting-edge architectural and engineering prowess. The bridge’s design includes two 55-metre high masts fitted to the lifting leaves, with the top two metres illuminated by white LED lights. This feature not only enhances the bridge’s visual appeal but also makes it a beacon of modernity, visible from afar.

The bridge is constructed in five spans, with a total length of approximately 139 metres. The approach spans are 27 metres each, while the central lifting span provides the necessary clearance for marine traffic. Four 7-metre high pillars house the barriers, lights, speakers, and traffic controls, linking the bridge with the control room. This ensures that the bridge operates efficiently and safely at all times.

A Bridge with a Purpose

The Twin Sails Bridge was conceived with a clear purpose: to facilitate the development of four major sites, two in Poole Town Centre and two in Hamworthy. These sites include the old power station, which was closed in 1988, and are poised for significant redevelopment. By providing a second road link between Poole Town Centre and Hamworthy, the bridge plays a crucial role in unlocking the potential of these sites and driving economic growth in the region.

Variable-message signs direct traffic to the open bridge, ensuring that one of the two bridges (the Twin Sails Bridge and the existing Poole Bridge) is always available for vehicular traffic. This system minimizes disruption and keeps traffic flowing smoothly, even during maintenance closures or marine emergencies.

A Journey Through Time

The journey to the completion of the Twin Sails Bridge was not without its challenges. Plans for a new bridge date back to the 1980s, with the second lifting bridge concept being suggested in 2000. After a fixed bridge crossing Holes Bay was cancelled by the government in 1998, the council submitted detailed plans to the Department for Transport in 2004. Following a public inquiry in 2005, the £37 million Twin Sails Bridge project was given approval in 2006/7.

However, construction was initially delayed due to a stalemate between the council and landowners. After negotiations were settled in August 2009, there was a further delay in the allocation of a £14.14 million government grant, which was finally agreed upon in March 2010. Construction began in May 2010, with completion and opening planned for late February 2012. Despite some initial problems with the road surface, the bridge opened to traffic on 4 April 2012, marking a significant milestone in Poole’s history.

Overcoming Challenges

Since its opening, the Twin Sails Bridge has faced several technical issues, including problems with the barrier operation, lifting mechanism, and road surface defects. These challenges have led to periodic closures and ongoing maintenance efforts. Despite these setbacks, the bridge remains a vital part of Poole’s infrastructure and a symbol of the town’s resilience and determination.

In recent years, the bridge has continued to experience technical problems, leading to further closures and repairs. Engineers are working diligently to address these issues and ensure that the bridge remains operational for the long term. While the journey has been fraught with difficulties, the Twin Sails Bridge stands as a testament to human ingenuity and the relentless pursuit of progress.

A Beacon of Hope

The Twin Sails Bridge is more than just a bridge; it’s a beacon of hope for Poole’s future. Its striking design and innovative engineering make it a landmark that residents and visitors alike can admire and appreciate. As Poole continues to grow and develop, the Twin Sails Bridge will undoubtedly play a central role in shaping the town’s destiny.

Whether you’re a local resident or a visitor to Poole, the Twin Sails Bridge is a must-see landmark. Its unique design, practical functionality, and historical significance make it a fascinating destination for anyone interested in modern engineering and architecture. Take a stroll across the bridge, enjoy the stunning views of Poole Harbour, and marvel at this modern marvel that stands as a testament to Poole’s past, present, and future.