Project SUREbridge Hardenberg

The project in outline

Given the innovative nature of the project, a step-by-step approach was mutually agreed upon:

Preliminary investigation
Before working out the solution using the SUREbridge method, research was conducted on the existing load-bearing capacity of the current bridge.

The steps below have been taken:

  1. Desk study to find out data of the current bridge;
  2. Materials examination (reinforcement scan by dislodging concrete);
  3. Conduct probing (at both abutments);
  4. Investigation of the foundation of the bridge by ground radar. The piles were detected via ground radar;
  5. Investigation of penetration of de-icing salts into the bridge:
    1. Drill cores from the bridge section were examined;
    2. Remove portion of asphalt and inspect bridge deck including temporary repair.

Permit application
When it turned out to be technically possible to apply the SUREbridge method to the bridge and thus bring the bridge back up to current requirements, the permit process was initiated.

The following steps have been taken:

  1. Permit check which permits and/or notifications need to be applied for/done;
  2. Prepare and apply for necessary permits;
  3. Initiate engineering for the purpose of permitting and approval by client.

Implementation
In addition to general construction site work, activities on the bridge consist mainly of the following items/phases:

  • Disassemble existing handrails;
  • Demolition of the ramp sides of the bridge;
  • Performing minor repairs to the bridge and roughening the top of the bridge;
  • Modification of abutments;
  • Installing adjustment devices and anchors in the bridge;
  • Assembling and setting the composite panel;
  • Sealing joints and injecting mortar between the existing bridge and the composite panel;
  • Finishing top of bridge;
  • Installing the railing and connecting the roadway.

During implementation, the innovative process is comprehensively recorded and documented.

Load tests are also conducted before and after implementation to test the calculations against real-world conditions.