Yesterday, I drove with my wife to meet friends in the picturesque Gloucestershire village of Cranham. It was eventful, as we had not reckoned with the recent new diversions for traffic on the A417. For sure, we had seen before, the extraordinary works going on - the so-called Missing Link development - as we have travelled these Gloucestershire roads many times. But somehow, this time, we found ourselves perplexed and delayed by the new diversions, which were taking traffic to new sections of the development, whilst work could be carried out on the areas familiar to us over time.
In our visit, when we finally arrived and settled into our time with our friends, we discovered that the common at Cranham at the heart of the village is one of a number of very special “unimproved grassland” commons on limestone soil.
When we discovered all this, I immediately thought of the effects of those extraordinary earthworks on other areas of Cotswolds grasslands.
The enormous roadworks visible around the A417 between
Gloucester and Cirencester are part of the A417 Missing Link (Air Balloon)
project. It is one of the largest road schemes currently being undertaken in
the Cotswolds.
What a bewildering
collection of earthworks, new roads, temporary routes and roundabouts! I have discovered that this is in
fact the construction of an almost entirely new strategic road across the
Cotswold escarpment.
The essential purpose is to replace the notorious
single-carriageway section of the A417 with a safer, more reliable and
substantially better-engineered route.
So, I have had a look at the details of it all. I try not to be too hasty in condemning the destruction of yet more of the Cotswolds' natural habitats. Although from the outset, it is clear from research that The Missing Link does indeed concrete over some of the Cotswolds' precious remaining calcareous grassland. This includes a significant proportion of the unimproved grassland within the scheme boundary.
In compensation, the project proposes to create a far larger area of species-rich calcareous grassland and to connect habitats through ecological corridors and a green bridge. The numerical biodiversity balance is therefore strongly positive on paper.
But the ecological question is not simply
one of acreage: newly created grassland cannot immediately possess the history,
soil ecology, species communities and maturity of established unimproved
limestone grassland.
The true success of the scheme will therefore depend upon
whether the new habitats survive, mature and become genuinely species-rich over
the decades ahead.
When someone walks across these hills fifty years from now,
will they see a road that damaged an already-fragmented Cotswold landscape — or
a road around which a new and genuinely flourishing limestone-grassland
landscape was successfully created?
I plan to expand this piece when time allows.

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