| Precision Inspection Service of Danwol Bridge |
2011 |
Chungju |
 |
| Precision Safety Diagnosis Service of National Highway No.38 Bakdaljae Tunnel (Southbound) |
2011 |
Chungju Road Management Office |
|
| Precision Inspection Service of National Highway No.3 JinchonBridge (Northbound) |
2011 |
Chungju Road Management Office |
|
| Precision Inspection Service of National Highway No.3 JinchonBridge (Northbound) |
2011 |
Chungju Road Management Office |
|
| Precision Safety Diagnosis Service of Hacheon Bridge |
2011 |
Chungcheongbuk-do Road Management Office Chungju Branch |
|
| Precision Inspection Service of Mokhaeng Bridge |
2011 |
Chungju |
|
| Precision Inspection Service of Dalcheon Overbridge |
2011 |
Chungju |
|
| Precision Inspection Service of Cheomdan Bridge |
2011 |
Chungcheongbuk-do Road Management Office Chungju Branch |
|
| Precision Inspection Service of Janghowon Bridge |
2010 |
Eumseong |
|
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