Bridge over the Vetluga River
Railway construction / Bridge over the Vetluga River

Reconstruction of an odd-numbered track bridge over the Vetluga River at the 570th kilometer of Gorky ? Shakhunya Gorky Railway section (Nizhny Novgorod Region).

Work started in November 2010; work completed in September 2013.

Bridge design: 34.04+2x125.9+34.04 m. Bridge length: 332.19 m.

Scope of Operations:

  • Repairing the pillars and abutments above the water level: reworking the caps, grouting pillar masonry, putting in place reinforced concrete jackets on pillars No. 1 and No. 3 in the varying water lever area;
  • Repairing the underwater part of pillar No. 2: putting in place a reinforced concrete jacket, leaving the metal formwork, grouting the underwater part of masonry;
  • Restoring abutment slope cone consolidation;
  • Replacing all the four span structures;
  • Placing non-ballasted deck and installing continuously welded rail track;
  • Implementing shore protection measures including landslide protection measures;
  • Erecting paramilitary guard buildings and facilities.

Reconstruction of the bridge was carried out because the span structures have been in service for over 80 years and showed signs of damage (corrosion and fatigue damage); the bridge pillars also needed to be repaired because they were built of rubble stone on cement mortar and lined with granite stone. The odd-numbered track bridge span structures were installed in 1925-1926 on the pillars that were erected back in 1916-1917 when Gorky ? Kotelnich railway line was built.

The channel span structures No. 2 and No. 3 were replaced within 68 hour time windows using the lateral and axial launching method. The old span structure was pulled back onto temporary supports and was then lowered down. The new span structure was then launched axially into the span range; it was then launched laterally and installed as per design on the bearings. The end span structures No. 1 and No. 4 were replaced within 21 hour time windows using a properly sized 130-ton electric jib crane.

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