From the GZ the two bridges crossing the Van Stadens river can be seen. The largest of the two (on the N2) was opened on 11 November 1971. It took 4 years to complete (1967 - 1971) and is the 1st of 5 large concrete bridges along the N2. The bridge is an arch bridge design with a height of 140 m. (460 ft) and a span of 198.1 m. (649.9 ft). The construction method used was Cantilever construction using temporary cable-stays. It is the largest concrete arch bridge in Southern Africa and the N2 is the only highway in the world (outside of China or Italy) to have 3 bridges in excess of 500 ft (152 m) in height.
The second bridge is on the R102 and is the old Van Stadens pass bridge.
The concrete remains of the original drift over the river can still be seen amongst the rocks and boulders and might be an area where you would like to search.
Upstream of the Van Stadens bridge there is a 2 ft (610 mm) guage railway bridge known as the Avontuur Railway Bridge.
Information obtained from the first Two Bridges Cache placed by MountaineerWarrior.
The listed coordinates will take you to the center of the bridge on the R102. To find the cache take a bearing of 217.49 degrees and a direct distance of 58.25 meters.