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Glenrock NPWS approved bridges?
NB: Originally posted elsewhere on the Global Riders Network and appears via syndication.
Hi, does anyone have any photos/designs of the NPWS approved bridges at Glenrock please?
thanks
Ray Rice
XC VP WSMTB
xc@wsmtb.com
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Only 1 bridge of about 2.5 feet in grock. Not really an "approved" thing as far as I know. Are you thinking of the awaba bridges??
Any NPWS approved bridge would do please - as long as it does not have to be 3m wide with handrails and able to take a Mack truck!
Yes?
Like refreshingly good said, no approved bridges in Glenrock. Its all rock reinforced creek beds.
Bridges at Awaba are state forest approved, constructed of scaffolding and are built with foundations well out of the creek beds to try and prevent erosion.
To build in a National Park?
I think I could get you a spec. but you might not like it.
EMPY, ray is working with the NPWS in yellowmundie in western sydney.
Few issues there with NP's over the bridge issue.
Have you seen the bridges at Mount Annan? They are very wide but they are also more then a metre high. I'm sure lower bridges could be built in a similar fashion and not so wide. I'm sure there would be sounething in the Australian Standards for pedestrian bridges.
The "bridges" at Mt Annan are crossings not bridges. A brigde would have required engineering and council approval, the crossings did not.
A change in terminology may be required.
Hi Ray my memory may be letting me down but I'm sure walking trails like Valley of the Waters below the conservation hut at Wennworthfalls have some small foot bridges that wouldn't be much more than 2 or 3 feet wide without rails.
They are only short.
NP have a walking trail construction guide that I think you can down load. That may have specs.
Not sure if it comes under NP any more but I'm sure they had input into the single trail at the bottom of Lawsons Long Alley. It contains a raised platform about 1m wide and about 10m long, never really taken much notice of how high it is as it is surrounded by dense ferms
Flynny, that platform is no more than a foot or two off the ground and is more like a duckboard than a bridge. There IS actually a wooden bridge across a small gully on that same single track, though. It's probably 1.5 m long and doesn't appear to be that substantial. I haven't had a close look at it, but I doubt whether it's the best example of a well-made, durable bridge.
Don't know how old these bridges you mention are, Flynny, but I suspect when it comes to structures like these, it might be similar to housing regulations: if it's already in place before any increased standards are introduced, it's not mandatory to upgrade it to meet those new standards. I'm pretty sure that any new structures going in to NPs will be MUCH more substantial than some of the dodgy old examples one can still find on the old walking tracks.