Maralal -Sayuni – Sura Aduru (B120) Road

Construction of 65km bitumen-standard road on Maralal–Sayuni (A4) and Junc A4 (Kisima)–Sura Aduru (B120) in Maralal, Samburu County, Kenya. Scope of works could include: Infrastructure Setup: Resident Engineer’s offices, laboratory, and staff housing. Road Maintenance and Traffic Management: Deviation roads, existing road improvement, and traffic flow maintenance. Earthworks: Excavate expansive clays, backfill with CBR 10% material, compact to 95% MDD, and construct 300mm improved subgrade (CBR 14%). Road Construction: 200mm cement/lime-improved sub-base, 150mm base, MC30 prime, K1-60 tack coat, 50mm asphalt concrete binder course, 60/70 binder, single seal surface dressing, 6m carriageway with 1.5m shoulders, and asphalt for bus bays/junctions. Drainage and Protection Works: Replace culverts, construct box/pipe culverts, headwalls, wingwalls, aprons, side/mitre drains, and erosion protection. Bridgeworks: Earthworks, piling, concrete production, pile caps, piers, abutments, wing walls, steel girders, 250mm reinforced concrete deck slab (11.5m wide), and 4m approach slabs. Road Furniture: Road signs, markings, kerbs, precast channels, invert block drains, grass planting, guardrails, and bridge drain pipes. Concrete Works: Concrete class 15 (blinding), class 20 (minor structures), class 30 (culverts, bridge members), and class 35 (bridge superstructure). Ancillary Works: Guardrail barriers and major junction improvements. Maintenance: Traffic passage, works maintenance during construction. The exact GPS location is not known and the Marker has been placed along the C77 route in Maralal, 1.0900417, 36.6972372.