I find it amazing that the bridge at Thrupp has failed and CRT has failed. The bridge fails to lift because the hydraulic oil has thickened in the cold weather. I find this very difficult to believe it didn’t do it last year or the year before. Maybe it just need the oil changing, it’s been in there a while now. Aircraft hydraulic fluid is good for –56oC I have never known there to be a problem with that.
CRT has failed because when the bridge was installed it was supposed to be fixed with an engineer on site within two hours. The bridge is currently out of action and the navigation closed for at least 24 hours. Doh!