Project Location Map
Markham Bridge is the longest bridge in PNG. The bridge was constructed 30 years ago. The existing bridge was damaged on the approach road on the Lae side and the abutment and the piers were damaged by the flood in March 2004. The Government of PNG carried out repairs to the damaged areas, however the foundation of pier No.3 subsided due to scouring by flood water and the foundation is likely to subside again in future floods.
The approach road on the Lae side was washed away by the flood in March 2004 and the traffic on the bridge was maintained by a temporary bridge which was constructed in August 2004. The project of reinforcing of piers No1 to No. 4 were carried out in August 2004 to avoid the failure of the bridge. The repairs for the approach road and the bank protection were carried out by AusAID in June 2006 and the temporary bridge was removed. These repair and reinforcing works were carried out as an emergency measure to maintain the traffic flow but more substantial measures are needed.
The objectives of the project are to maintain the essential functions of the existing bridge for several decades by the repair or strengthening of the abutment and piers of the bridge and the approach road and carrying out bank protection works.
Strengthening Piers No1 to No4
Condition of Pier No3
Lae side Bank Protection
The original request from the government of PNG for the Project was to reconstruct the Markham Bridge,however through meetings with the preliminary survey team from Japan and the Government of PNG, it wasagreed to repair the existing bridge. The contents of the request from the Government of PNG, modified by the survey results by the preliminary survey team and agreed by the both party are as follows:
|1) Lae side revetment work||Construct new steel sheet pile foundation (73.2m) Connect|
|2) Repair of abutment on Lae side||Install concrete footing and steel pipe pile for abutment|
|3) Reconstruction of 4 piers on|
the Lae side
|Remove the existing piers and construct a new piers|
|4) Super structure||Repaint steel girder and repair a part of railing and guardrail,|
repaint all of railing and guardrail
|5) Approach road on the Lae side||Total road length 50m (pavement, slope protection, drain work)|
Restoring and Rehabilitating works on roads and bridges are not mentioned in the latest environmental license system of Papua New Guinea although a new project on the national roads is classified as Level 2 which needs to acquire the approval of the environmental management plan for the project. Therefore, this rehabilitation project on Markham Bridge is categorized into Level 1 which does not need to obtain the approval. Likewise, as the result of the preliminary study, this project is specified as Category C of JICA Guidelines for Environmental and social Considerations. The Category C means that the project gives little deleterious effect to the region and the residents.
The following items shall be taken into consideration when implementing the project using grant aid.
We sincerely hope that the project will contribute the development and stability of Papua New Guinea.