Nyrrian Bridge

The Nyrrian Bridge crosses the River Helvander in Torrune, just above its confluence with the Greywine, connecting the Low City's southwestern quarter (the Millstone Quarter) with the unwalled district of Fenside. It is of stone construction, and is quite wide, but is lower than Qorro's Bridge or the Fortress Bridge that cross the river further downstream.
Like Qorro's Bridge, the arches and piers of the Nyrrian Bridge are relatively close-set, meaning the flow of water between them can be dangerously swift when the river is running high. This also means that large boats cannot pass under it; this is no disadvantage, however, since it is the city's westernmost bridge (thus the furthest upstream) and the bottom of the Helvander Cataracts are barely a mile above it.
The Nyrrian Bridge is named for Nyrrias of the House of Thoab, fifth Lord of the City, who ordered its construction in 1128 CV to reduce the volume of boat traffic coming and going from Fenside (and thus, it was hoped, to make smuggling more difficult).