Buyer's guide
Above-Ground vs Pit Weighbridge: Cost and Site Guide
Most of the cost difference between an above-ground and a pit-mounted weighbridge is in the ground, not the steel. This guide explains where the money goes, how the two compare on site, and what to check before you ask for a price.
What drives weighbridge cost
1. Equipment
Deck length, capacity, deck material (steel or concrete), the number of load cells, and the indicator, remote displays, traffic lights and software you add. A longer, higher-capacity deck costs more regardless of mounting style.
2. Civil works and foundations
This is where the two types differ most. An above-ground bridge needs a level concrete base and ramps. A pit-mounted bridge needs a pit designed, excavated, formed, reinforced and poured, plus drainage. Poor ground, rock or a high water table add cost to both — usually more to a pit.
3. Installation and commissioning
Crane hire, transport, fitting load cells and cabling, then calibration with certified test weights and verification if the bridge will be used for trade. Remote sites add travel and mobilisation.
4. Ongoing maintenance
Regular calibration, cleaning under and around the deck, and load cell checks. Pits collect water and fines and need cleaning out; above-ground bridges are easier to keep clean and inspect.
Because these factors vary so much from site to site, we price weighbridges after a site assessment rather than from a list.
Above-ground vs pit: side-by-side
| Factor | Above-ground (surface-mounted) | Pit-mounted |
|---|---|---|
| Footprint | Longer overall — needs ramps at each end | Deck length only; flush with ground |
| Ramps | Required at both ends | Not required |
| Civil cost | Lower — level slab and ramps | Higher — pit, walls, reinforcement |
| Drainage | Water drains away naturally | Pit drainage must be designed and maintained |
| Relocation | Practical — deck can be lifted and moved | Difficult — pit stays behind |
| Cleaning | Easy side access | Pit needs regular clean-out |
| Typical use | Greenfield sites with room for approaches; mines, quarries | Tight yards, drive-through traffic, urban sites |
Site checklist before you request a quote
- Ground bearing capacity — has a geotechnical report been done, or is one needed?
- Water table and drainage — does the area pond after rain? Critical for pits.
- Underground services — power, water, gas, communications or old footings under the proposed location.
- Turning space — can the longest vehicle enter and leave the deck straight?
- Overhead power lines — affects crane lifts during installation.
- Approaches — straight, level runs on and off the deck at both ends.
- Power and data — supply for the indicator, traffic lights and any office connection.
- Trade use — will the tickets be used to buy or sell? This decides approval and verification.
Which one should you choose?
- Choose above-ground if you have room for ramps, want lower civil cost, may relocate the bridge later, or have wet ground.
- Choose pit-mounted if space is tight, you need drive-through traffic with no ramps, or the yard layout demands a flush deck.
- Either way, size the deck for your longest vehicle combination and the capacity for your heaviest gross mass — see weighbridge capacities. Still deciding between a weighbridge and a large floor scale? See choosing heavy-duty industrial scales.
For an example of why relocatability matters, see our 33 m multi-deck weighbridge relocation, completed over a single weekend.
FAQ
Frequently asked questions
Book a site assessment for your weighbridge
Teralba workshop · 7 Sidelight Street, Teralba NSW 2284 · Mon–Sat 7am–5pm, Sun 9am–5pm