Hadath – Syrian Border Highway (Lebanon)
- Location: Lebanon
- Client: Lebanese Republic
- Section: Hadath-Syrian Border
- Length: North 430 m; South 430 m
- Spans: No. 11
- Max span: 40 m
- Max piles height: 70 m
- Precast concrete: made by Toto
The Mdeirej viaduct has a total length of 430 m divided into 11 spans of 40 m, with separate decks and substructures for each carriageway.
It is constructed with prefabricated beams connected with cast-in-situ diaphgrams which secure the structural continuity. The bridge crosses a wide and deep valley in straight line with the central piers at a considerable height of about 70 m maximum.
The viaduct overall width is 33.30 m (16.15 m + 16.15 m), which can serve consisting of three lanes plus one emergency lane per carriageway.
The deck is made up of three prefabricated “V shape ” 2.00 m deep & 5 m wide per carriageway. A 25 cm thick cast- in-situ slab is constructed on the top beams leading to a total deck depth of 2.25 m.
The beams were prefabricated directly on site by Toto.