The construction of Fairfield Bridge commenced in August 1934 and was opened in March 1937 at a cost of £26,000.
When the project was first proposed, Hamilton’s population was approaching 16,000 and there was only one other bridge at that time. However its location was controversial as many complained that it was too far away and would never be used. The construction became a local attraction, with many Hamiltonians enjoying the walk into the countryside and picnicking beside it.
Soon after drilling commenced, they found an underground forest that no one had been aware of. Logs were so hard they had nearly turned to coal causing an unforeseen delay in completion. Then during the building of the foundations, the excavator came across a burial cave in the bank of the river and several preserved Maori heads were discovered.
The cache is located on the upstream (southern) side of the bridge, and the parking coordinates given will take you to the closest and safest approach. Cache is within easy reach - no climbing required! You will need to bring your own pen, and chances are that you will be carrying the appropriate bait required to help entice Nessie from her lair. Please place her back gently so she is completely out of sight again - we don't want to cause the inevitable widespread panic resulting from any reported sightings!
It's best to avoid rush hour traffic times due to the extreme muggleness of this area. You will need to time your retrieval for when the traffic is moving and no one is watching you.
Night time is recommended, and then you could always take the cue from the workmen above and do the classic ‘grand traverse’ of Nessie's humps (or as geocachers may call it, “the GT from GZ”) whilst under the cover of darkness… not that I would ever condone doing anything that irresponsible 
If you think that all sounds a bit scary, then check out what this guy did in broad daylight. Talk about balls of steel. Respect, Dude!