
Union Bridge
The project involved the construction of a new 72m long, three span prestressed girder bridge over 10m high.
Technical Details
- 3 span bridge, dual lane
- 72m long and over 10m high
- Driven steel piles up to 70m long, precast concrete pier/ abutment, prestressed girders, cast insitu deck
- Complex foundations into a karst (cave) system requiring a mid-construction design change to double the number of piles.
- Installation using a 50t crawler crane on a barge along with erection gantries
- Approach roadworks including cuts into a 10m high embankment and significant fill
Relevance to B3, R2 Prequalification Categories
- Complex foundations involving deep piling
- Pile installation from floating equipment (B4)
- Cast insitu composite deck
- Construction over water using floating cranes and erection gantries (B4)
- Large / significant concrete pours (B4)
- Significant earthworks including structural fill and rock protection