Reference Document - Property Bridge

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REFERENCE DOCUMENT
     MCU20/0084
   NOOSA COUNCIL
  15 OCTOBER 2020
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   CD:JM 20507
   14 February 2020


   328 Upper Pinbarren Creek Road
   PINBARREN QLD 4568

   ATTENTION:           Property Owners

   RE: 328 UPPER PINBARREN CREEK ROAD, PINBARREN – PROPERTY BRIDGE – LEVEL 3
       REPORT AND CERTIFICATION


   TOD Consulting were engaged by the property owners, at the time of inspection, to carry out a
   Level 3 investigation for the structural condition of an existing bridge, on the property of 328 Upper
   Pinbarren Creek Rd. TOD Consulting carried out a Level 3 inspection on 30 January 2020.

   Conclusion: Bridge to be load limited to 7.5 tonnes allowable gross vehicle mass (GVM) for a
   maximum of 2 years (until January 2022). If the bridge shows any concerning behaviour before this
   date, please contact a bridge engineer for advice immediately. The bridge shall be subjected to a
   Level 3 inspection and re-rated on/before 30 January 2022.

   Bridge Details: The timber girder bridge is comprised of two spans and is continuous over the
   middle pier support. The overall deck dimensions are 12.8 metres long (nominal) x 2.9 metres
   clear width between kerbs. Span 1 is 5.9 metres and Span 2 is 6.0 metres between the centre of
   supports. The two abutments and one pier are constructed in concrete, where the extents are
   unknown. The bridge carries two directional traffic with one lane of operation.

   Original Design Load: The original design load is assumed to have been 30 tonnes allowable
   GVM.

   It has dilapidated since then, as per the following paragraphs.

   Existing Risks: Several built-in risks were identified with the bridge superstructure, including:

      •       Girder 1 (Span 2 midspan) is in Very Poor condition (Condition State 4) due to vertical
              crack at top of girder causing internal rotting/decay of component.
      •       Girder 2 End 1 (at Abutment A) is in Poor condition (Condition State 3) due to 18% snipe.
      •       Girder 3 End 1 (at Abutment A) is in Very Poor condition (Condition State 4) due to 23%
              snipe and 26% pipe.

   Please note that the timber girders were unable to be accessed to be drilled at either side of Pier 1.
   Therefore, the Condition States at these points are unknown.

   Condition State: In our opinion, the bridge Condition State is 4 (Very Poor).