by clarence » Tue 26 Nov, 2013 11:32 pm
The figure of $200/lineal metre is in the ball park. I used to work for NPWS doing track building 15 years ago. For high use, high quality tracks in premier parks, the cost at the time was around $200/Lm.
On a major track rebuild of a more generic 600mm wide "track" (say grade 2-3 from AS 2165) the cost would have been around $20-$30/Lm. Both these relate to late 1990s costs.
There are major costs associated with planning, signs and materials, which have to be factored in to the track building in addition to labour.
Another very significant issue is construction of tracks in steep and rocky areas with very poor access (eg under-cliff tracks in Blue Mountains for example). I would suggest that remote area track construction would at least double per lineal metre due to the need to fly in materials, tools and fuel for generators/chainsaws, especially if specialised materials are required. A typical residential deck would cost somewhere in the vicintiy of $500/square metre. Remember a walking track with a boardwalk would be 1200mm wide, equating to $600 per Lm based on this cost of $500/sqm. Put a boardwalk track in a remote area and $1200/Lm is very plausible for the sections that require this type of construction.
A typical NPWS worker works 7 hours per day. By the time they get to the depot, travel to site, walk to the work site (say 1hr each way for walk plus drive), unpack and pack up tools (usually hidden under a tarp in the nearby bush), carry in a few materials, they will probably acheive 4.5 hours of productive track work on the tools every day- making about 23 hours of productive work per week, all things going well.
Many rangers (who specify how tracks are made) like to make their own little mark on these jobs, and hence tend towards overengineering (IMO) and hence unnecessary increased costs. This includes stone steps, unistrut walkways and stairways, imported fill and boardwalks. They want to leave their impression by making some whiz-bang track that is more fancy than that in the adjacent national park or local council lookout. Overspecification of this type of detail again could easily double the cost of construction of a more generic natural trail, but also add substantially to recurrent maintenance costs. The boardwalk at Minnamurra Rainforest is one such example, where the recurrent funding of replacing kilometres of hardwood walkway treads would be outrageous. The rangers who specify such trails often have little of no construction experience, and are specifying and managing jobs they don't know enough about. This is another reason public money is wasted.
Once I left the NPWS I advised a group of mountain bike riders who wanted to construct some trails. In the same time the NPWS had thrown about $100,000 at maintenance of 5km of walking track, this group of less than 5 active "workers" had built about 3.5km of new mountainbike trail, after work, on weekends, with no funding or materials and did a very high quality job in very similar terrain. Incidentally, the privately built mountainbike trail has stood up just as well as the NPWS built track even after 10 years of use (apart from where the downhill MTB riders got onto it).
Needless to say it was this type of stupidity and mismanagement of public funds at the NPWS that was the main reason for my departure.
For those who are interested in walking track construction the NSW NPWS has an excellent publication on the topic "Walking track Construction Guidelines" by Stephen Gorrell.
Clarence