UPDATE: 12:20PM
Ticket Acceptance with stagecoach has now been removed as ScotRail are getting trains back into place. Glasgow Central - Ayr services are returning to normal.
ScotRail have cancelled trains between Ayr & Glasgow after a road vehicle struck a bridge between Barassie and Troon.
ScotRail said on Twitter: "A road vehicle has struck a bridge between #Barassie and #Troon. The bridge is a red structure so it'll need to be examined by @NetworkRailSCOT. Until then we are unable to run trains through these stations."
"We have arranged ticket acceptance on @StagecoachWScot between Ayr and Kilwinning.
"Our staff have examined the bridge and we're now working hard to get services back on schedule."
From what we understand a 'red structure' can mean that the bridge has to be examined by safety engineers to asses any structural damage and to deem the bridge safe for Trains to pass over.
ScotRail Tweet