Roads and Highways Services

Overview

GIBB has executed complex projects across various sectors and engineering disciplines across many African countries. The firm remains committed to achieving excellence in every project, and is proud to be the firm of choice for the continent’s most qualified engineers, many of whom are leading experts in their fields.

GIBB’s technical expertise is enhanced through our relationships with various global partners. The combination of top talent, in-depth industry knowledge, well-earned reputation for excellence and commitment to timeous, within budget delivery, ensures that the client is guaranteed success in every project.

Services

GIBB’s Roads and Highways Sector provides a comprehensive range of services that include traditional consulting services (design, procurement and contract supervision), Public Private Partnership (PPP) solutions and asset management services. This includes mega roads, freeways and bridges.

Institutions, regulatory and legal frameworks.
Integrated transport plans.
Public transport plans.
Public transport policy development.

Public transport facility feasibility investigations.
Public transport facility, operation, design and maintenance.
Public transport operational design and management.

Selected Project Experience

Roads and Highways Services

Client:
Danish Ministry of Foreign Affairs, Danish International Development Agency

Location:
Ghana

GIBB’s Responsibilities:
GIBB was appointed to conduct a study carried out on the Takoradi – Agona Junction Road, which forms part of the Elubo – Takoradi – Accra – Aflao coastal trunk road.

This is part of the Trans African Highway network linking Cote d’Ivoire with Togo, Benin and Nigeria.  Due to the effects of increased traffic loading and insufficient maintenance, the existing road (28 km) was in urgent need of rehabilitation or reconstruction.

The objectives of the study were to provide sufficient information and analysis for the Government of Ghana and Danish International Development Agency (DANIDA) to: confirm viability of road rehabilitation projects with a design life of 20 years; technically assess alternative improvement options in order to identify an optimal solution, and provide recommendations to DANIDA.

Tasks included: traffic surveys; road condition surveys; materials investigations; hydrological survey of the road drainage system; accident data collection, and an environmental impact assessment.  Subsequently, the most appropriate rehabilitation measures were identified and the economic viability for each of these options was tested.

Roads and Highways Services

Client:
Government of Eswatini, Ministry of Public Works and Transport

Location:
Eswatini

GIBB’s Responsibilities:
The Government of Eswatini, through the office of the Ministry of Public Works and Transport, had explored possibilities of funding future capital and/or rehabilitation and/or maintenance programmes along the main corridors in Swaziland. Tolling was one funding mechanism and required further investigation.

The Swazi Toll Advisory Consortium, put together by GIBB, was awarded the project. The objective of the investigation was to determine the rehabilitation and preventative maintenance requirements for the roads along the corridor during the concession period of 22 + 5 years.

Tasks performed were initial and detailed rehabilitation condition assessment of the roads and rehabilitation investigations as well as cost analysis.

Roads and Highways Services

Client:
City of Cape Town

Location:
Cape Town, Western Cape, South Africa

GIBB’s Responsibilities:
GIBB’s activities included transport planning and traffic engineering, drainage and stormwater studies, geometric design, pavement engineering, structural design and building services.

Roads and Highways Services

Client:
South African National Road Agency (SANRAL)

Location:
Western Cape, South Africa

GIBB’s Responsibilities:
GIBB’s tasks on the Piekenierskloof Pass project were as follows: geometric design; lighting systems; pavement engineering; drainage and stormwater engineering; structural engineering, and bridge engineering.

Roads and Highways Services

Client:
Government of Lesotho

Location:
Lesotho

GIBB’s Responsibilities:
GIBB was appointed to be the design engineers for the Mantsonyane-Lesobeng Road in Lesotho. Specific tasks included bridge engineering; geometric design; pavement engineering; drainage and stormwater engineering, and flood protection engineering.

Roads and Highways Services

Client:
South African National Road Agency (SANRAL)

Location:
South Africa

GIBB’s Responsibilities:
GIBB was appointed by SANRAL for design of Section 12 of the N3 national freeway. The N3 links Johannesburg and Durban. Activities included the bridge design, geometric design, traffic engineering, geotechnical investigations and freeway lighting.

Roads and Highways Services

Client:
Roads Authority of Namibia

Location:
Namibia

GIBB’s Responsibilities:
GIBB was appointed to provide the consulting services for the duel carriageway between Windhoek and Rehoboth in Namibia (approximately 90 km).

This project entailed the upgrade of the existing two-lane, single carriageway to a new four-lane divided dual carriageway road including interchanges, river bridges and a road-over-rail bridges. The road section serves as part of the transit corridor from South Africa to Namibia’s northern neighbours including Angola, Zimbabwe and Zambia.

GIBB’s tasks included: feasibility studies; preliminary designs; detailed designs for interchanges, bridge, culvert and drainage systems; preparation of bid documentation; economic analysis; traffic engineering; technical specifications; construction administration, and site supervision.

Roads and Highways Services

Client:
Greater Port Harcourt City Development Authority

Location:
Rivers State, Nigeria

GIBB’s Responsibilities:
GIBB was appointed to be the consultants for the development of the M1 and M10 freeways in Port Harcourt, Nigeria.

The M1 project comprised construction of a 16 km dual carriageway freeway from East-West Road to the old city. It also included the provision of access interchanges and bridges, as well as reinstatement of access through existing loaded areas.

The project included ten bridges, one of which one is 1.25 km in length.  The freeway joins the M10 and provides an 8 km link extending from Ikwerri Road in the east to Ada George Drive in the west. Here, an interchange connects the new M1 link to the Port Harcourt International Airport.  A short section of the M1 link up to Owerri Road formed part of this project.

Roads and Highways Services

Client:
Botswana Roads Department

Location:
Botswana

GIBB’s Responsibilities:
GIBB was awarded the Mochudi Link Rail Bridge project in Botswana, which is located on the A13 single carriageway road, and which crosses the Gaborone Francistown Railway, north of Gaborone.

The project included the bridge abutments, pier, foundations and two outer decks made of reinforced concrete. The central deck, which sits over the main rail line, comprised pre-tensioned pre-stressed reinforced beams with a reinforced concrete slab over the beams. The bridge was founded on end bearing piles 0.4 m in diameter and approximately 8 m deep.

Additionally, GIBB’s tasks included the installation of one metre high New Jersey parapets which were installed along the full length of each deck edge and the road-over-rail bridge, which is 31 m long has 3 spans: two of 11 m and one of 9 m in length. The deck was designed to be over 12 m wide to accommodate two 2.4 m surfaced shoulders and two traffic lanes 3.7 m wide.