Weight limit for Bucks bridge needing strengthening

Weight limit for Bucks bridge needing strengthening

Published by Dan Gooding at 1:20pm 7th January 2020.

A 200-year-old bridge in Aylesbury Vale has had a weight restriction put on it, until repairs can be made.

The Ivinghoe Bridge needs to be strengthened, but that work can't happen until the autumn, so the limit will be 18 tonnes for now.

The work, originally planned for January, has been rescheduled to start in the autumn following an ecological survey that identified possible bat nesting sites. Further bat activity surveys will now have to be done during the breeding cycle until September.

The Canal and River Trust (C&RT), which owns the bridge - known locally as Brownlow Bridge - that carries the B488 across the Grand Union Canal, undertook a review following concerns about its structural condition.

Transport for Buckinghamshire (TfB), which checked C&RT's findings, agree it's strong enough only to handle traffic loads up to 18 tonnes, and a temporary weight restriction has been imposed on the bridge to protect it from possible further weakening.

Lorry Wheel
There have been worries about heavy vehicles on the bridge at Ivinghoe

The weight restriction will stay in force until the strengthening works have been done.

Meanwhile a ground penetration radar survey of the bridge deck has been commissioned to help advance the design of the strengthening work.

Paul Irwin, Buckinghamshire County Council Deputy Transport Cabinet Member said it was important the bridge works were done as soon as possible to stop any further deterioration and to maintain a structure that was sound enough to be part of the highway.

"TfB will increase the frequency of their structural inspections and, in addition to the Canal and River Trust inspections, we'll have a much clearer picture of the bridge's condition to check it doesn't get any weaker.

"I've met with a number of local people who are concerned that the bridge is being used by heavy lorries. I understand these concerns, which is why we've been considering ways to enforce the 18 tonne limit, and why we're moving as quickly as we possibly can within the scope of ecological legislation to start strengthening work."

Paul said the bridge works were being considered in tandem with a proposed longer-term area-wide plan for handling heavy lorries.

The £100,000 cost of repairs will be met from TfB's structures fund.

The C&RT is statutorily required to maintain the bridge, a Grade 2 listed structure, to carry a maximum nine-tonne weight. But as it forms part of Buckinghamshire's road network, requiring a higher weight limit for traffic, it falls to the County Council to oversee its maintenance. 

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