|Location Map ( geo)|
Twyning Interchange (also known as Brockeridge Common) is junction 1 of the M50, connecting it to the A38 in the very north of Gloucestershire. Just like Rashwood Interchange (M5 J2), which opened two years later, the south eastern slip road has an unclassified road joining it, thus meaning motorway regulations don't start immediately at the roundabout.
The junction opened in 1960, only two years after the first motorway, the Preston Bypass opened. It formed the eastern terminus of the M50 for 2 years until a mile long extension to connect to the newly built M5 was constructed in 1962.
When it first built the sliproads had Cattle Grids across them. The northern one was close to the roundabout while the southern one was close to the motorway. One was also provided on the Brockeridge Road which is still there today.