General Information

Figure 1 shows a two-lane road beam bridge.

Beam bridge.
Beam bridge with wall piers over a river
Main span ≅ 20 m
Girder Precast concrete box-beam

Transverse Tie Rods

Figure 2 shows a main span sector viewed from below.

Main span.
Main span of a beam bridge viewed from below

The girders are transversely tied by rod pairs (upper and bottom).

  • What are some possible reasons to install transverse tie rod pairs instead of single transverse tie rods?

    • Figure 3 shows a transverse tie rod pair with a missing bottom tie connection.

    Missing bottom tie connection.
    Prestressed concrete beams with a failed steel structure
  • Does the bridge have a structural safety or serviceability problem with a missing bottom tie connection?

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