A grader and roller working the road formation on the Benin-Agbor road at Uhunmwonde, Edo State.

Road Construction Status

Road construction status.

Where the works have reached, how the road is being built, and what the corridor will look like when it opens.

How the road is built

A pavement designed to outlast the concession.

The corridor is built to a design life of more than 20 years — longer than the concession term itself. Design was completed before construction began: topographic and geotechnical surveys, pavement design, bridge structural design, and traffic systems design are all issued.

Flexible pavement build-up

Layers from the top down.
LayerThicknessNotes
Bituminous wearing course4 cmApplied over binder course with tack coat
Bituminous binder course6 cmLaid over primed surface
Prime coat0.7–1.0 kg/m² over the sub-base
Granular sub-base15 cmGranular material, no cement
Cement stabilised base15 cm3% cement, recycled and crushed material
Sub-grade15 cm min.CBR above 15, plasticity index below 12

Rigid pavement

Where a concrete pavement is specified, a 20–25 cm pavement-quality concrete slab is laid over 15 cm of dry lean concrete, on the same granular sub-base and stabilised base build-up. Road marking follows the curing period, and road furniture is fixed to the highway manual.

Drainage by corridor character

Drainage is designed in three distinct configurations along the route, because a road through central Benin City does not drain like a road through rural Delta.

  • Urban — km 0+000 to 2+500
  • Semi-urban — km 54+000 to 61+000
  • Rural — km 61+000 onward

Structures

  • Ikopaba major bridge, km 3+400 — pile foundations, pre-stressed concrete girders and deck slab construction.
  • Minor bridges — slab works, including at km 16+600, with approach slabs on both sides of every bridge.
  • Pedestrian bridges — new construction on pylon and raft foundations.
  • Vehicle underpasses — segment casing with reinforced earth walls on both sides.

Production capacity

We make our own materials.

Most road programmes in Nigeria stall waiting on third-party supply. This one produces its own asphalt, concrete and aggregate on site, and hauls them with its own fleet — so construction pace is governed by production capacity rather than market availability.

Operational

Concrete batching plant

On-demand concrete at the Bypass for toll plazas, drainage and pavement — removing dependence on external ready-mix.

Commissioning

Two asphalt plants

Dual plants sited at each end of the corridor. On-site production removes temperature degradation risk in transit and keeps the mix under our own quality control.

Operational

Crushing plant

Produces graded aggregate to specification with substantial stock held on site, removing haulage dependency for aggregate.

Deployed

50-truck logistics fleet

A captive haulage fleet for materials movement, so delivery to the work front does not queue behind third-party availability.

In production

Precast moulds

Drain units and New Jersey barrier forms produced in-house, eliminating external supplier lead times on these elements.

Secured

Materials supply

Granite allocation secured by advance deposit with quarry suppliers; bitumen dual-sourced from two independent suppliers; reinforcement steel ordered to programme.

Stay informed

Questions about the works near you?

If construction is affecting your community, your business or your route, we would rather hear from you than have you guess.