{"id":6860,"date":"2023-01-01T12:02:39","date_gmt":"2023-01-01T12:02:39","guid":{"rendered":"https:\/\/www.systra.com\/ibt\/?post_type=projects&p=6860"},"modified":"2026-04-09T23:07:24","modified_gmt":"2026-04-09T23:07:24","slug":"a1-m1-link-road-bridge-mauritius","status":"publish","type":"projects","link":"https:\/\/www.systra.com\/ibt\/project\/a1-m1-link-road-bridge-mauritius\/","title":{"rendered":"A1-M1 Link Road Extradosed Bridge – Coromandel, Mauritius"},"content":{"rendered":"\n
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Technical details<\/div>\n \t
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Customer<\/div>\n\t
Mauritius Road Development Authority<\/div>\n\t <\/div>\n
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Dates<\/div>\n

Construction Completed: 2024<\/p>\n<\/div>\n <\/div>\n

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Localisation<\/div>\n
Coromandel, Mauritius<\/div>\n <\/div>\n
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Partners<\/div>\n
Contractor: Transinvest \u2013 GCC \u2013 Bouygues TP \u2013 VSLi, Bridge Structure: SYSTRA IBT Dubai (support from SYSTRA IBT San Diego), Drainage: SAI India (subcontractor to SYSTRA IBT), Lightning Protection: SEFTIM (subcontractor to SYSTRA IBT), Wind Specialist: Svend Ole Hansen (subcontractor to SYSTRA IBT), Geotech: ARQ (subcontractor to TRANSINVEST-GCC-BOUYGUES TP-VSLi (TGBV)), Form Traveler: Rubrica (subcontractor to TGBV), Reinforcement Specialist: SAMT (subcontractor to TGBV), Climbing Formwork: Doka (subcontractor to TGBV), 3rd Cat Checker: COWI (subcontractor to TGBV)<\/div>\n <\/div>\n
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Activity<\/div>\n
SYSTRA IBT's Role: Detailed design and construction engineering.<\/div>\n <\/div>\n \n \n <\/div>\n\n\n\n
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DESIGN-BUILD<\/h2>\n\n\n\n

Main Span: <\/strong>100 m (328 ft), 130 m (426 ft), and 100 m (328 ft), supported by slender 100 m (328 ft) tall pylons.
Depth:<\/strong> 90 m (295 ft), with a 25 m (82 ft) wide dual carriageway 3-span extradosed concrete bridge.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

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A1-M1 Link Road Extradosed Bridge is a highway project of approximately 1 km (62 mi) in Mauritius. The project crosses the Grand River Northwest Valley, a natural gorge with a depth of approximately 90 m (295 ft), with a 25 m (82 ft) wide dual carriageway 3-span extradosed concrete bridge with spans of 100 m (328 ft), 130 m (426 ft) and 100 m (328 ft), supported by slender 100 m (328 ft) tall pylons.<\/strong><\/p>\n\n\n\n

The deck is a single box girder, with a constant depth, cast in place by the typical balanced cantilever method, and required the use of temporary stay cables to progress the cantilever construction towards the abutments. Being subjected to major cyclonic winds, a detailed wind climate study of the project site was conducted to derive wind buffeting loads for the bridge design, both in construction and service.<\/p>\n\n\n\n

This superstructure improves traffic within the network of A1 Road and M1 Motorway and provides alternative access to the city of Port Louis to traffic originating from Rose Hill, Beau Bassin,\u00a0Chebel, Chapman Hill, and Upper Coromandel.\u00a0This bridge\u00a0is\u00a0the most aesthetic structure and\u00a0an important national landmark in Mauritius.\u00a0<\/p>\n\n\n\n

SYSTRA IBT’s scope of work involves detailed structural design, bar bending schedule and construction drawings, construction engineering and deflection control, drainage, and lightning protection.<\/p>\n\n\n\n

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