The technical data of the bridge
1. Structural system, span lengths, widths

Superstructure of the bridge over the riverbed: cross sectionSteel superstructure through welded, made of OL 52 grade low along steel of high strength, a continuous beam with five spans of 120+3*160+120 m each, having a 720 m length, provided with a bast cross section and variable height and with orthotropic plate having lamellar longitudinal ties.

Superstructure of viaducts: cross sectionThe access viaducts are provided with prestressed reinforced concrete superstructure, simply supported beams of 46 m length and four cross beams.

These beams have been precast on site, on specially mounted platforms on the two river banks and installed on substructures, by ripping, launching and lighting to the final elevation, by specially designed equipment for these activities: the weight of a beam is 140 t. Cables of 48 f 5 and double tapered ring metal anchors, of INCERC 120 type, have been used.

2. Deck

Asphalt poured in two layers of 2.6 cm depth and covering the steel superstructure, subsequent to blasting, zinc plating and application of an asphalt mortar protection covering with rubber dust mixture, even over the viaducts, provided with a waterproof insulation made of three layers bituminous fabric and a concrete reinforcement with steel wires protection.

The pavement slab and cross beams have been prestressed by 36 f 5 and 12 f 5 cables.

3. Foundation, substructure

Central pier - general dispositionDesign and construction of the substructure of the main bridge were a very difficult problem. The solution realised is as follows: foundations on steel columns of 1.95 m diameter, embedded by vibration and drilling, proficed with reinforced concrete rafts introduced into steel sheet enclosures for piers on the river banks and with high reinforced concrete rafts, partially precast, for the central piers, embedded in the ground, at about 45 m length.

Foundation on precast reinforced concrete columns of 3.0 m diameter, embedded by vibration at about 40 m depth in the substructures connected to viaducts.

Detailed geotechnical and hydraulical studies have been prepared based on laboratory tests by the Hydraulic Research Institute in Bucharest.

The viaduct superstructure, piers and abutments have been founded each on 12 Benets, f 0.88 m drilled columns, provided with reinforced concrete rafts within metal sheet enclosures, reinforced concrete elevations within climbing formworks ands struts at the prestressed reinforced concrete top part. For supporting the wing walls of abutments, other four columns of the same type have been carried out.

4. Bearings

The load capacity of fixed and mobile bearing devices are 1400 t respectively.

5. Quantities of applied materials

A special problem was the supply of the metallic material and the welding technology considering the very strict conditions required by the use of the high strength weak alloyed steel of the class OL 52.