- Denham Roundabout
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The Denham Roundabout is a large road intersection to the west of London, at junction 1 (J1) on the M40 motorway.
When Western Avenue was originally built, it ended at a point west of Uxbridge at the intersection of the road from Uxbridge towards Gerrards Cross and High Wycombe (the old Oxford Road) with the road from Slough; a conventional roundabout was constructed to replace the former tee-junction where the older roads joined. When the M40 towards High Wycombe was built, Western Avenue was extended at high level to make an end-on join with the motorway, and a larger roundabout was built below the bridges carrying the motorway. When first laid out, the roundabout had the traffic going round it clockwise in the usual way, but as traffic volumes built up the layout was altered so that the traffic moved round the roundabout in both directions (so as to make the roundabout a kind of very small ring road) with mini-roundabouts at the points where other roads join the main roundabout.
More recently an access road to a golf club has had its own mini-roundabout created on the north side of the main roundabout.
See also
- Magic Roundabout (Colchester)
- Magic Roundabout (Colchester)
- Magic Roundabout (High Wycombe)
- Google Maps satellite image view
Coordinates: 51°33′41″N 0°29′45″W / 51.561251°N 0.495715°W
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