Our bridge inspection services cover Level 1, Level 2 and detailed Level 3 load rating assessments. In addition to bridges, we also inspect culverts, OHW structures, sign gantries and general infrastructure assets.
What do the different inspection levels cover?
Level 1 Inspections
General serviceability of the structure is checked and emerging problems are identified and scheduled for maintenance or further investigation.
Level 2 Inspections
Here we take a closer look at the performance of the structural elements. We assess and rate the condition of the structure to identify current maintenance needs, forecast future changes in condition and estimate future budget requirements.
Level 3 Inspections
These inspections generally include a combination of field investigation and structural analysis. They target specific issues arising from Level 1 and 2 inspections in order to provide more detailed knowledge of the condition, load-carrying capacity and in-service performance.
Bridge Load Testing
This is an effective method of evaluating the structural response of a bridge. We use controlled moving load and advanced strain and deflection testing apparatus.
Fatigue assessments target sections of the bridge that are subject to repetitive cyclic stress intervals in order to confirm the accumulated damage and remaining fatigue life. This type of assessment is particularly relevant to old steel bridges, helping to establish the required routine monitoring, inspection and strengthening of critical elements.
Bridge Design and Renewal
Our bridge design capabilities include preparation of feasibility studies & cost analysis, concept design including alignment, structure options and interface with other disciplines, and detailed design drawings & documentation.
Our experienced team have delivered designs for various bridge configurations including girder deck system, box girder system, precast concrete arch system, corrugated steel arch system, box culvert system and engineered timber deck system.
Bridge Refurbishment Design
We have extensive experience working with our clients to develop customised maintenance plans to extend components remaining life until next major replacement projects are planned.
Bridge Asset Management
Asset management is defined by ISO 55000 (2014) as ‘the coordinated activity of an organisation to realise value from assets’. Asset management of bridges relates primarily to structural performance, condition and risk. The definition and measure of value is multi-faceted; the value relating to managing a bridge asset could mean:
- Carrying out activities that seek to preserve a culturally significant bridge,
- Investing in the maintenance of a bridge where aesthetics is important,
- Accepting lower costs to maintain and manage a bridge should a short-term remaining service life be required,
- Managing a bridge to minimise lifecycle costs,
- Ensuring continuity of access.
Paragon have the capability and experience to design and implement asset inventory & management systems, there are number of steps required to establish the database. The illustration below indicates the steps in the right order for the establishment of the process. A number of these steps will be recurring throughout the remaining life of the asset to create a mature system.
Take advantage of our significant experience in bridge assessment and engineering
A deep understanding of bridge engineering combined with the complexities and challenges presented by real-world conditions has allowed us to build a wealth of knowledge and experience in bridge design.
Over many years, we have worked with road and rail authorities, infrastructure asset managers and construction companies to plan and design innovative and practical solutions that take priorities and budgets into consideration.
Our team is made up of professional engineers and drafters who specialise in bridge analysis & design, supported by highly experienced bridge examiners and timber specialists.
What we do:
- Bridge inspection and load rating,
- Design and renewal of road, rail and pedestrian bridges,
- Bridge strengthening and rehabilitation,
- Bridge asset management,
- Value engineering,
- Structural monitoring.
As to the service we have received from Paragon, especially considering the very short notice and their existing workload, I could not speak more highly of the most professional service they have provided, both in the nature of that advice and service, and the manner in which it was provided. In the future, I would certainly recommend Paragon Engineering most highly. For me, it has also been a pleasure to work with the entire Team.