Parson Shields bridge is at the bottom of a fairly steep farm road leading off the A689 road north of Slaggyford. The road continues to the farm on the east side of the river across the bridge. The Tyne has a stoney bed here and the Knar Burn joins it just beyond the bridge, surrounded by many trees.
The bridge is a substantial structure of steel girders, cross-braced and supported by stone piers at each end. The roadway is also steel.