How to set bridge port cost

How should one set the path cost for a bridge port? The command uci set network.lan.priority=1 is the equivalent of brctl setbridgeprio br-lan 1, but I don't see any way to do the equivalent of brctl setpathcost br-lan eth0 "$cost" with uci. Is there a way that I'm missing? If not, what's the best way to persistently set the path cost for a bridge port?