Beam slab

The principle of Poutre-Dalle® beam slab:

The Poutre-Dalle ® beam slab is a convenient method of erection of bridge decks, that consists simply in combining advantages of a prefabricated beam in provisional phase with those of a slab in final phase.

We are used to produce reliably at our factory  prestressed concrete parts with the geometry of an inverted T with all guarantees required by the quality insurance system.

The vertical and horizontal surfaces receive a rough finish that guarantees flawless grip of junctions between elements.

The design of footings and longitudinal rib provide robust dimensioning that provide comfort and security required on the erection site.

The inner flat face of these elements has easily a fine bubble free surface.

The implementation of Poutres-Dalles® beam slabs is quick and easy: each component is simply approached by the crane in a single descent maneuver with lateral shifting. Loops of transverse reinforcements are positioned during the manufacturing for being automatically combined with those of adjacent Poutre-Dalle ® beam-slabs.


The workers are in a convenient location to put in place longitudinal junction steels. There are no additional or temporary formwork to install between the Poutres-Dalles ® slab beams.

Concreting junctions is easy, it is similar to a slab but with greatly reduced amounts of necessary concrete.

Advantages of Poutres-Dalles® beam slabs

Speed and ease of implementation
Possible to erect above roads in use
Aesthetic aspects
Economic and competitive solution
Quality control
Management / reducing of delays
Slenderness and elegance of the deck

(1/28 for isostatic slabs)

Economic and competitive solution

Types of structures achievable using Poutres-Dalle ® slab beams

Such deck type allows achieve crossings in the underpass or overpass, indistinctly.

It is advantageous in many cases and should be envisaged for all structure types below:

Slabbed overpasses

(PS-DA and PS-DP)

Closed framework underpasses


Open porch underpasses

(PIPO and POD)

Culverts and acoustic trenches


Hydraulic structures on piles or sheetpiles
Enlargement or replacement of existing decks