Page 114 - Bridge and Highway Structure Rehabilitation and Repair

CHAPTER 3 BRIDGE FAILURE STUDIES AND SAFETY ENGINEERING 89

Table 3.4 Historic failures due to fl ood scour (continued).
Austrian Bridges Location Year Details
Motorway Bridge Near Salzburg 1959 Scour due to fl ooding
Two-span truss bridge over Between Linz 1982 Scour led to loss of pier and partial collapse of bridge
Traun River and Selzthal girder.
Five-span box girder motorway Near Kufstein 1990 Scouring led to settlement and major damage of
bridge over Inn River distorted superstructure.
Bridge in Braz Braz, Vorarlberg 1995 Express train plunged into ravine after mudslide
destroying rail bridge—scour due to fl oods
Bridges in Austria Various locations 2002 Flooding in Thurnberg, Engelstein, Salzburg and other cities
—scour
Portuguese Bridges
Bridge over river Lisbon 2001 Bridge collapse caused a tour bus to plunge into a river

Indian Bridges

Bridge between Jabalpur Madhya Pradesh 1984 Flooding scour
and Gondia
Bridge (Nalgonda district) Near Veligonda 2005 Floodwaters from two breached reservoir tanks upstream
washed away the embankment leaving only the rail tracks
dangling in the air. Train derailed and plunged into a rivulet
due to breaches on the track.
Railway bridge India 2005 Flood washed a rail bridge away—foundation scour.
Long span suspension bridge Daman 2003 Flood velocity
over river
Chinese Bridges

Two bridges Central China 2002 Floods

South Korean Bridges
Bridge over river Seoul 2004 Foundation scour

Australian Bridges
River bridge 40 km west of Queensland 2005 A man was checking fl oodwaters when the bridge he was
Charters Towers standing on collapsed—fl ood scour.

5. Deep sheet piling sections were used to minimize scour of abutment and wingwalls.
6. Both superstructure and substructure designs are based on the LRFD method. Figure 3.8
shows the completed bridge.
7. Replacement design of the Rancocas Creek Bridge by the author (see Figure 3.9) shows the
parapet type used by Burlington County, NJ.
Flooding of Rancocas Creek and occasional overtopping of the bridge showed that the
bridge was functionally obsolete. It had become dangerous and its hydraulic opening needed to
be increased. Unlike the spread box beams of Peckman’s River Bridge, adjacent box beams were
used which helped to reduce life cycle costs by avoiding corrosion and repainting.