Embodiments of the invention relate to providing transposable access to a synapse array using column aggregation. One embodiment comprises a neural network including a plurality of electronic axons, a plurality of electronic neurons, and a crossbar for interconnecting the axons with the neurons. The crossbar comprises a plurality of electronic synapses. Each synapse interconnects an axon with a neuron. The neural network further comprises a column aggregation module for transposable access to one or more synapses of the crossbar using column aggregation.