One way gates installed on Coldhams common

A pair of one way swing gates have been installed on Coldhams common.  This blocks the path for people like me with a cargo bike because it is not possible to hold the gates open and hold the bike at the same time.  I spoke with someone on the site and they said it was needed to stop cows escaping while they replaced the cattle grid.  Surely there is a better way that don’t stop access for cargo bikes?