Bonny-sur-Loire bridge
Coordinates: 47 ° 33 ′ 1 ″ N , 2 ° 50 ′ 6 ″ E
Bonny-sur-Loire bridge | ||
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Official name | Pont de Bonny-sur-Loire | |
use | Road bridge | |
Crossing of | Loire | |
construction | Suspension bridge | |
overall length | 440 m | |
Number of openings | 3 | |
Pillar spacing | 3 × 120 m | |
start of building | 1899 | |
completion | 1902 | |
planner | Ferdinand Arnodin | |
location | ||
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The bridge of Bonny-sur-Loire connects the place Bonny-sur-Loire with the place Beaulieu-sur-Loire on the other side of the Loire and the Canal latéral à la Loire in the Loiret department in France . The Route nationale 65a leads over the bridge.
The closest bridges upstream are the modern bridge to the Belleville nuclear power plant, 5 km away, or the older suspension bridge in Cosne-Cours-sur-Loire, 18 km away, and the Châtillon-sur-Loire bridge, 8 km downstream .
description
The road bridge , built by the Arnodin company from 1899 to 1902 in the style of the suspension bridges by Marc Seguin , has two lanes and a walkway on both sides. It is 440 m long from anchor block to anchor block and has a pillar spacing between the outer pylons of 360 m, which is divided into three spans of 120 m each. The bridge therefore has four pairs of pylons in a row.
The reinforced concrete pylons are stiffened against each other by a cross beam. The suspension cables consist of six bundled wire ropes , the hangers of vertical steel rods. The outer pylons are anchored back to the banks with eight ropes in anchor blocks. The tips of the pylons are each connected by two so-called compensating cables (câble d'équilibre).
The track girder consists of steel trough boxes, the undersides of which are stiffened by longitudinal and transverse struts. The roadway including the sidewalk runs inside the trough, its side cheeks also serve as bridge railings.