There are a variety of sizes and load capacities, the prices are shown also. Please call back with questions.
For these standard bridges to be installed you need your banks to be firm (“Good Ground” as defined by NZBC), free from scouring and well vegetated. We also require the bottom of the bridge to be above the high water / flood water level by at least 400mm or high enough so that in the event of flooding, debris does not disturb the bridge (as is preferred for all bridges).
The prices shown are for the materials (materials for abutments, bearers, 200x100mm decking, running boards, hardware, materials for side fences of kerbing, 2 x bridge signs (bridge signs as per legal compliance), plans, PS1) delivered (unloading may be required on arrival), and exclude installation.
As a guide for the installation – good ground conditions and good access to both sides of the crossing is assumed. A tractor with a bucket or FEL (or better still a digger) that is available or the builders can bring one at extra cost. Assumes each bank is approximately level with the other then the installation should take approx. 3-3.5 days for 2 builders / fencers for a 4m clearspan (6m platform) bridge. For a larger bridge, say 8m clearspan, allow up to 4-5 days for 2 builders. Plus, if anchor piles required at each end add this time to drive the piles plus the concrete collar around the top (approx.) 600mm of these piles.
Any on-site work is not part of Greenwood’s kitset and plans offer: the builder or fencer will invoice you directly for this, but we can normally recommend a local contractor to you.
If ground conditions are not “Good Ground” then it might be that anchor poles need to be driven either side of bridge at each end (4 in total). This would be at extra cost. To be certain your ground is “good ground” you may wish to have a local engineer verify this by visiting the site and testing the ground conditions. This is your cost. Unless ground is Good Ground, then a specific engineered design is required, at extra cost.
In summary Greenwood verifies the bridge structure is compliant (all GreenWood bridges are engineered by an independent engineer), you to verify your ground conditions, assembly has been completely properly and to maintain the bridge during it’s lifetime. Note – while a bridge’s capacity may be max 12,000kg, the bridge could possibly still support a 24,000kg truck (for example) as often, especially for shorter bridges, much of the truck is not on the bridge at the same time. Prices for the Greenwood engineered kitset bridges-
GreenWood Sheds are designed to last for many years.
A very economical option for many waterway crossings.
Quick to install – no specialist heavy equipment needed.
Virtually maintenance free – unlike some culverts.
All Greenwood bridges are engineered.
One kitset, engineered to do the job!
Faster and cleaner crossings.
For 3.6m wide bridges add 12% to the above prices. Prices exclude gst, valid as at Aug 2022, prices may change without notice, delivered on farm subject to location / unloading facilities (extra freight cost may apply).
GreenWood’s terms and sale conditions apply with all purchases.Note – the maximum clearspan is 8m.
Every bridge comes with an Independent engineer’s Producer Statement. To ensure a smooth construction process and the longevity of our bridges, certain requirements must be met by landowners.
Consents are required in various circumstances. Independent engineer’s Producer Statement issued with each bridge. GreenWood Bridges are for on-farm or on private property for private use. GreenWood’s engineered farm bridges are not designed for public roads or public use.
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