The project involves the geometric redesign of the national route N11 (a segment of about 107 km from Bolgatanga to Polmakon of the road), the widening of existing drainage structures, the creation of new ones and the demolition and replacement of 3 existing bridges by new ones made of RC precast I-bems.

The 3 new structures were designed using the same type of beams to optimise production costs:
1) KULAA bridge: 5 spans with 16.70 m span length. Total length of the structure is 82.75 m. It supports a double carriageway and two lanes for each one. The total width is 22.60 m.
2) RED VOLTA bridge: 5 spans with 16.70 m span length. Total length of the structure is 82.75 m. It supports a double carriageway. The total width is 12.50 m.
3) RED VOLTA bridge: 11 spans with 16.70 m span length. Total length of the structure is 182.95 m. It supports a double carriageway. The total width is 12.50 m