This is not really a corridor charging site and it's not CEC funded, but I thought it was noteworthy.
There is a relatively new site in Pomona, CA that has the first paired ChargePoint Express 250 installation that I know of. When ChargePoint announced the Express Plus charging system in January 2017, they announced this pairing capability. Each station contains a charging unit that can output 156A at 400VDC, limiting the amps if the voltage is higher, for a maximum power of 62.5kW. When the stations are paired and only one car is charging, all the available power can be directed to that vehicle, up to 312A and 125kW. The user interface on this installation indicates this capability, but none of the Plugshare checkins have validated it. I also don't have any information about what CHAdeMO limits are applied at this station. Presumably the best it could be is 200A since that is the best CHAdeMO cable on the market at the moment.
Plugshare - 7-Eleven - Pomona, CA