Under the contract, the Texas-based construction engineering company will work for three spreads of phase two of the Line 3 Replacement Program.

The pipeline to be constructed by Quanta Services as per the contract will start from White City in Saskatchewan and end at Brandon in Manitoba.

The company is likely to begin the construction work from next month and is expected to achieve considerable completion in the first half of 2019.

Financial terms of the contract won by the specialized contracting services company were not disclosed.

Earlier this week, Enbridge Pipelines had given a C$282m ($212.7m) pipeline construction contract to SA Energy Group for Spreads 8 and 9 of phase two of the Line 3 Replacement Program in Manitoba.

SA Energy is a joint venture between Aecon, a Canadian construction company, and Robert B. Somerville, an Ontario-based general contractor.

Under its contract, SA Energy will be responsible for the construction of 92.2km of pipeline in Brandon for Spread 8 and construction of 96.5km of pipeline near Morden for Spread 9, which will extend to the Canada-US border.

The Line 3 Replacement Phase 2 project, which is part of the C$5.3bn ($4bn) Canadian portion of the Line 3 Replacement Program, will see replacement of around 1,070km of the existing Line 3 pipeline built between Hardisty in Alberta and Gretna in Manitoba with new pipeline.

Enbridge Pipelines aims to put the Canadian Line 3 Replacement Program into commercial operations in the second half of 2019. The midstream company is undertaking a similar replacement program for the US portion of the Line 3 pipeline system with an investment of $2.9bn.

Last month, Enbridge Pipelines reported that it had received approval from the Minnesota Public Utilities Commission (PUC) to go ahead with the works related to its Line 3 Replacement Program in the US state of Minnesota.