Header Image

Theresa Creek Rail Bridge

ClientQueensland Rail
Value$600,000
StateQueensland
CompletedSeptember 2015

The Theresa Creek Rail Bridge was replaced within just 4 days. Utilising precast headstocks and the innovative Direct Fix for the rail-lines, VEC and the crew of just 8 were able to complete the project within the limited closure. This project is part of the 22 Timber Bridge Replacement, Designed and Constructed by VEC for Queensland Rail.

The Project

 

The Design & Construction of the Theresa Creek Rail Bridge was part of the 22 Rail Bridge Replacements contract for Queensland Rail. The Theresa Creek Rail Bridge is just 13km from Emerald in outback Central West Queensland. The Theresa Creek Rail Bridge is 40m long and 8m high. Each approach was required to be lifted by 1m to enhance the rail profile.

The replacement of this - and the other 21 rail bridges within this contract - has ensured the continuous service of trains to these remote country towns, securing the financial futures of many outback citizens. The existing timber bridge had become degraded and needed replacing. The rail alignment was also corrected during the placement of the new precast concrete bridge.

The existing timber bridge was replaced with a precast concrete bridge with steel piers. The VEC design stipulated prefabricated steel piers to save time and to enable the construction to be completed within a shorter time-frame. Typically, steel piles are placed directly onto the cross-head; however, due to the flood loads and the height of these piers, VEC place a precast pile cap and prefabricated steel piers. The pile caps were placed before the occupation period. The steel fabricated piers were position as soon as the existing bridge was demolised. The precast headstocks were supplied by HUMES.

In the redesign phase of this project, it became evident that one of the culverts in the close vicinity of the bridge needed replacing. This was also completed by VEC by means of a variation to the contract.

Direct Fix

VEC took the Direct Fix system with Pandrol plates, and adjusted the design for the Pandrol plates to be fixed directly to the precast, prestressed voided plank, with a direct fix rail onto these beams.

The structural depth was reduced by ~400mm, allowing the rail to remain at its’ current level, without reducing the waterways below the beams. Between the direct fix rail, VEC used precast concrete guard rails, giving the structures very clean and flowing lines which looked slim and attractive.

The Direct Fix was also integrated in the guardrail of the Alice River Rail Bridge. The VEC crew completed rail approach works.

The entire project was completed on time, within budget and with zero safety incidents.

Embankments

The construction of the embankments at each approach during the closure saw that 2500 tonnes of material was placed.

 

View the embedded image gallery online at:
http://www.vec.com.au/project/theresa-creek#sigProId20263828d5

Head Office

10b Industrial Dr, Ulverstone,
TAS 7315

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Hobart Office

Level 3, 116 Bathurst Street
Hobart, TAS 7000

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Melbourne Office

Level 10, 567 Collins Street, 
Melbourne, VIC 3000

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 (03) 9278 5100
Fax +61 3 6425 6112

Queensland Office

2 Burke Street,
Woolloongabba, QLD 4102

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112