IMIESA Nov/Dec 2021

Page 40

ROADS & BRIDGES

OPRC specialisation gains MOMENTUM at Mariswe Mariswe’s leadership role in output and performance-based road contracts (OPRC) on the African continent is being cemented by three projects currently under way in Rwanda and Zambia. This follows successful assignments in Ghana and Lesotho.

M

ariswe is a South Africabased company offering project management, infrastructure planning and civil engineering services, as well as life-cycle management for strategic projects. As the company adds to its portfolio of OPRC projects, its skills in both pre-construction

Blinding concrete prior to construction of a cast-in-situ concrete drainage culvert in Rwanda

Drainage infrastructure in Rwanda

studies and construction monitoring position it as an OPRC specialist. The OPRC methodology places the responsibility for the detail design and construction of the road works – as well as the ongoing road maintenance for a certain period – with the contractor. OPRC projects allow roads authorities to provide efficient road ser vices,

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IMIESA November/December 2021

and other related infrastructure, to communities by expanding the role of the contractor. Ultimately, this contract delivers better roads for more people for longer durations.

Rwanda Mariswe started work in 2019 on the design review and construction monitoring of two OPRC projects in Rwanda awarded by the Rwanda Transport Development Agency and funded by the World Bank. They involve the upgrade and improvement of two feeder road packages, each covering three districts in different parts of the countr y and totalling about 450 km. Mariswe is monitoring a total of 16 construction lots, working in joint venture with Rwandan consultancy Astrik International. The construction monitoring team includes engineers from South Africa, Zambia, Cameroon, Tanzania and Malawi. Mariswe’s brief includes training and knowledge transfer to the client and other local stakeholders based on the firm’s strong experience in OPRC projects. Recently completed assignments in Ghana and Lesotho involved assessment studies, concept design and bidding documents, while the Rwanda projects involve monitoring during the construction and maintenance phases. This reinforces Mariswe’s capabilities across the whole life cycle of the OPRC methodology.

Zambia A further recent award involves OPRC construction monitoring and design review of about 325 km of rural roads in the Eastern Province of Zambia for the Road Development Agency (Zambia). Mariswe is working in joint venture with AlliOne Consulting Engineers of Zambia. The appointment ends in May 2025.

Work in progress on the Zambian project Rwanda road infrastructure before and after

Before After


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Articles inside

Connected cities need to be secure

3min
page 41

Finding new homes for construction waste

3min
page 46

Spun poles for renewable energy distribution

2min
page 53

A concrete foundation for excellence

1min
pages 51-52

Leveraging Industry 4.0 for a post-Covid-19 recovery

6min
pages 48-49

The viability of eggshell powder as a substitute in concrete

2min
page 50

SABS awarded court order against trademark abuser

2min
pages 43-44

New developments in electronics prompt product updates

1min
page 45

Finding new homes for construction waste

4min
pages 46-47

Investing in people

3min
page 42

Connected cities need to be secure

2min
page 41

OPRC specialisation gains momentum at Mariswe

2min
page 40

AECI Much Asphalt wins in health and safety

2min
page 36

OPRC provides solutions to challenges encountered in road construction

6min
pages 38-39

Wayne’s superior-quality gumboots set the standard

2min
page 37

Municipal engineering at its best

10min
pages 30-35

Upgrading the Plankenbrug Main Outfall Sewer

5min
pages 28-29

Overstrand O&M contract sets the standard

6min
pages 26-27

Drought mitigation projects for Kouga Local Municipality

8min
pages 20-24

Coastal drought-buster solution

1min
page 25

2021 CESA Aon Engineering Excellence Awards winners announced

5min
pages 16-17

Deep erosion of a palmiet peat wetland

6min
pages 10-11

President’s comment

3min
page 7

Groundwater management and the community

7min
pages 12-13

The argument for a resource-based service delivery model

6min
pages 14-15

Infrastructure news from around the continent

4min
pages 18-19

Editor’s comment

5min
pages 5-6

Hall Longmore launches SA developed FBPE coating system

4min
pages 8-9
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