The architectural design of the Temple gates is defined by absolute symmetry and uniformity. The northern gate serves as a precise replica of the eastern gate, mirroring its structure and dimensions flawlessly. The gate is composed of several distinct architectural elements. It features gate chambers arranged evenly, with three situated on each side [מצודת דוד, אברבנאל]. The pillars and doorposts of the gate [מצודת דוד, ביאור שטיינזלץ] are located at the entrances to these chambers [מלבי״ם]. Further in, the halls of the gate extend inward, enclosed by walls on either side [מצודת דוד, ביאור שטיינזלץ]. This entire structural layout perfectly matches the measurements of the eastern gate of the Temple Mount, which was the very first gate to be measured [רד״ק, מצודת דוד, ביאור שטיינזלץ].
The physical dimensions of the gate offer a layered understanding of its scale. A length of fifty cubits is recorded, though commentators differ on how to apply this measurement. One approach suggests that this number actually refers to the overall height of the gate [רש״י, מצודת דוד]. Conversely, another perspective argues that the fifty cubits measure the internal space stretching from south to north, reaching the far end of the chambers [מלבי״ם]. A similar discussion surrounds the twenty-five-cubit width. This can be understood as the distance across the gate, measured from the roof of one chamber to the roof of the chamber directly across from it [רש״י]. Alternatively, this measurement might represent the span from the eastern chamber to the end of the gate's extension near the hall, running from east to west [מלבי״ם].