Axle load measurement with Weigh in Motion: reliable load data for your bridge
How many heavy vehicles really cross your bridge, and how heavy are they? An axle load measuring station from traffic-lines weighs every vehicle at full speed and gives you reliable data on axle loads, gross weights and traffic volume, without stopping traffic.
What you can use the data for
Assess bridge condition
Real load data instead of assumptions: you see what load the structure actually carries.
Plan maintenance
The data helps justify and schedule rehabilitation, strengthening or replacement.
Check load restrictions
You see how many vehicles ignore a restriction and can decide whether bridge protection is needed.
Analyse traffic
Vehicle classes, traffic volumes and daily patterns for planning and reports.
Target enforcement
Conspicuous vehicles can be identified, so checks take place where they are effective.
Expand later
The station is modular and can be extended with height and distance control.
How the measurement works
Weigh
Every vehicle is weighed at full speed, axle by axle. Nobody has to stop.
Classify
The system records dimensions and number of axles and assigns each vehicle to a class.
Extend
Optionally, Height in Motion measures vehicle height and Distance in Motion the gap between vehicles.
Evaluate
The measurement data is stored automatically and made available for your analysis.
Your benefits
Precise data
Several redundant systems deliver reliable measurements you can base decisions on.
No interference with traffic
Measurements are taken in flowing traffic, without congestion and without a checkpoint.
No staff required
The station works automatically around the clock.
Operational in 30 days
Fast installation, also on existing roads.
Buy or rent
For permanent monitoring or temporary measurement campaigns. Rental and sales
Upgradable to bridge protection
If measurement data is no longer enough, the system can be upgraded to active bridge protection.
You can find more about the technology on the page Weigh in Motion.
Axle load measurement or bridge protection?
Bridge protection
Actively stops overweight or over-height vehicles. Traffic lights and barriers divert them before the bridge. The right system when a load restriction has to be enforced.
Axle load measurement
Weighs and classifies every vehicle without interfering with traffic. The right system when you need to know which loads actually cross the structure.
References: axle load measuring stations at 8 bridges
- Flehe BridgeA46Düsseldorf · 2020–2023
2 lanes Weigh in Motion - Beeckerwerth BridgeA42Duisburg · 2020–2023
2 lanes Weigh in Motion - Uerdingen BridgeB288Krefeld · since 2021
4 lanes Weigh in Motion - Moselle Valley BridgeA61Koblenz · 2025
4 lanes Weigh in Motion, 2 lanes Distance in Motion - Theodor Heuss BridgeB7Düsseldorf · 2025
4 lanes Weigh in Motion - Josef Kardinal Frings BridgeB1Düsseldorf · 2025
2 lanes Weigh in Motion - Brunsbecke ViaductA45Hagen · 2026
2 lanes Weigh in Motion - Leda BridgeB70Leer · 2026
2 lanes Weigh in Motion
View all 16 projects on the map
FAQ on axle load measurement
Do vehicles have to stop for the measurement?
No. Weigh in Motion measurement takes place at normal speed in flowing traffic.
What is measured?
Axle loads, gross weight, dimensions and vehicle class. Height (Height in Motion) and distance (Distance in Motion) can be added as options.
What is the difference from bridge protection?
Axle load measurement records and documents. Bridge protection additionally diverts overweight vehicles with traffic lights and barriers.
Can an axle load measuring station be extended later?
Yes. The system is modular and can be extended with height and distance control or upgraded to bridge protection.
Can I rent an axle load measuring station?
Yes, for example for a temporary measurement campaign before a rehabilitation decision. Alternatively, you can buy the system.