Kakamega’s KSh12 Billion Roads Plan: What 200 Kilometres Must Prove Before Tenders Begin

Last Updated 57 mins ago by Kenya Engineer

Kakamega County has placed a large number on its transport ambitions: 200 kilometres of roads, upgraded or constructed to bitumen standard, at an estimated cost of KSh12 billion.

The proposal was highlighted by Governor Fernandes Barasa on 16 August while discussing collaboration between the county and national governments. The same county statement also referred to the Malaha-Khaunga road, the Nyaporo-Petros and Indoli bridges, and other development projects in Mumias East. It did not, however, publish the 200-kilometre route schedule, a financing agreement, an implementation period or the division of responsibility between the two levels of government.

That distinction matters. At this stage, the figure is a proposed programme, not evidence that funds have been appropriated, designs completed or contracts awarded. Its significance lies in the scale of the ambition and in the questions that should be answered before procurement starts.

Why 200 kilometres is not one engineering quantity

Dividing KSh12 billion by 200 kilometres produces a headline average of KSh60 million per kilometre. That arithmetic is useful only as a first sense-check. It is not a project rate and should not be treated as one.

A lightly trafficked access road, a town approach carrying buses and motorcycles, and a freight route serving agricultural processing have different geometric, pavement and safety requirements. One section may require little more than formation improvement, drainage and a low-volume sealed surface. Another may need deep excavation, subgrade treatment, heavy pavement layers, junction works, footpaths, lighting, utility relocation and multiple bridges or box culverts.

The Kenya Roads Board’s classification system separates national trunk roads from county roads because roads perform different network functions. The public route list should therefore identify the class, asset owner, current surface, length and intended service function of every proposed section. Without that schedule, neither engineers nor residents can tell whether the programme is addressing the most consequential gaps or merely assembling a politically attractive total.

The KSh60 million question needs a scope

A kilometre cost becomes meaningful only after the road cross-section, design traffic, materials, terrain and structures are known. It should be clear whether the KSh12 billion includes feasibility studies, detailed design, land acquisition, compensation, utility relocation, environmental mitigation, supervision, price escalation, taxes and post-construction maintenance.

Pavement design also requires more than choosing between asphalt and surface dressing. Engineers need traffic counts, axle-load assumptions, subgrade strength, drainage conditions and reliable information on the quality and haul distance of gravel, aggregates, bitumen and water. A thin pavement built on weak or saturated formation can fail early even if the visible surfacing initially appears sound.

The published amount may be a reasonable planning envelope. It cannot yet demonstrate affordability or value for money. That will require route-specific quantities and a financing plan that shows what is committed, what is still being sought and whether completion depends on several budget cycles.

Drainage will decide whether the investment survives

In a high-rainfall environment, drainage is not a secondary item to be reduced when the bill of quantities becomes tight. It is part of the pavement structure.

Each road needs catchment-informed culvert sizing, continuous side drains where necessary, protected outlets and a practical path for water to leave the road reserve without flooding homes or farms. Raising the carriageway without managing cross-drainage can simply transfer flooding from the road to neighbouring property. Undersized culverts can cause overtopping, washouts and erosion around bridge approaches.

Maintenance access must be designed at the same time. Drains that cannot be desilted, culvert inlets hidden by development and outlets that discharge onto unprotected soil will shorten asset life. The tender documents should specify not only what will be built, but how drainage assets will be inspected and maintained after the contractor leaves.

County-national collaboration needs a route-by-route map

Kenya’s constitutional and statutory framework allocates national roads and county roads to different authorities. Collaboration is possible and often necessary, particularly where a local access road feeds a national corridor. But the partnership must be explicit about ownership, procurement, supervision and future maintenance.

For every route, the programme should identify the responsible road authority, the source and timing of funds, the procuring entity, the engineer responsible for accepting the works and the agency that will maintain the completed asset. Ambiguity at this stage can later produce duplicated projects, gaps in supervision or a finished road with no protected maintenance budget.

The route map should also demonstrate network logic. The strongest package would connect farms, markets, schools, hospitals and industrial facilities to higher-class roads, rather than distribute short sealed sections that end at unserviceable links. Connectivity, not the colour of the surface, is what creates economic value.

Two hundred kilometres should not become one procurement problem

A programme of this size will probably require several contract packages. Packaging should balance competition, contractor capacity, geographic efficiency and the county’s ability to supervise simultaneous works. Contracts that are too large can exclude capable local firms; contracts that are too fragmented can overwhelm quality control and create inconsistent standards.

Common specifications, standard reporting and shared materials-testing protocols can keep the programme coherent, while route-specific designs account for local conditions. Independent supervision needs enough staff, transport, testing equipment and authority to reject substandard materials. Lowest initial price should not override design compliance or whole-life cost.

Payment planning is equally important. Delayed certificates weaken contractors, slow work and increase claims. A credible cash-flow schedule should match the planned construction sequence and rainy seasons rather than assuming that all 200 kilometres can progress at the same pace.

What should be public before tender

The programme would become substantially more credible with five disclosures: a route schedule and map; preliminary traffic, pavement and drainage requirements; a financing and cash-flow plan; the procurement and supervision structure; and the maintenance arrangement for each completed road.

The county and national government should also publish outcome baselines. These might include wet-season passability, travel time to markets and health facilities, crash risk at settlements, freight costs and the present condition of the network. Progress can then be measured in service improvements rather than only kilometres surfaced.

Quality should be checked beyond practical completion. Publishing pavement and drainage condition after the first and second wet seasons would reveal whether defects were corrected and whether maintenance started on time. A road is not successful because it was launched or even because it was opened; it is successful when it continues to carry people and goods safely at the expected cost.

A potentially transformative programme, still awaiting its engineering case

Kakamega has a defensible need for stronger links between rural production, towns and national corridors. Two hundred kilometres of well-selected, well-drained and maintainable roads could reduce isolation, improve access to services and strengthen agricultural and industrial logistics.

The proposal should therefore be taken seriously, but not uncritically. The next milestone is not a groundbreaking ceremony. It is publication of a route-level engineering and financing case that explains exactly what KSh12 billion will buy, who will deliver it and how the assets will remain serviceable long after construction.