GlossaryBridge Assessment
A bridge assessment is an engineering evaluation conducted to determine whether a bridge can safely support a proposed vehicle and cargo movement. It considers vehicle mass, axle loads, axle spacing, and structural capacity, particularly for abnormal load transport.
Bridge assessments are important when transporting oversized mining machinery, industrial transformers, heavy construction equipment, and other abnormal loads across South Africa.
For example, a company transporting a large transformer to an industrial facility may need to evaluate bridges along the proposed route before dispatch.
Even when a vehicle can physically fit on a road, the weight distributed across its axles may exceed the capacity of certain bridges.
Depending on the movement and applicable authority requirements, a qualified engineer may need to assess the bridge and recommend conditions for crossing.
If a bridge cannot safely accommodate the load, the transporter may need to consider an alternative route or vehicle configuration.
Defenlog considers bridge restrictions, axle loading, and route suitability when coordinating Project Cargo Transport across South Africa.
Frequently Asked Questions
Not always. Requirements depend on the proposed vehicle mass, axle configuration, route, and relevant road authority conditions.
Suitably qualified engineering professionals may conduct the assessments, subject to the relevant authority's requirements.
Only where the relevant authority specifically authorises the movement under applicable conditions. A permit does not automatically remove restrictions.
The transporter may need to identify another route, review the vehicle configuration, or obtain further engineering guidance.
Yes. Engineering reviews, approvals, and alternative route planning can affect the proposed transport schedule.