Wiss, Janney, Elstner Associates, Inc.
Collapse of the State Route 69 Bridge
over the Tennessee River at Clifton, Tennessee
for
Office of the Attorney General, State of Tennessee
WJE No. 951078
Table of Contents
| Chapter 1 - Introduction | |
| | 1.1 Background |
| | 1.2 Overview of Investigation |
| | 1.3 Organization of Report |
Chapter 2 - Description of Bridge and Erection Procedure | |
| | 2.1 Description of Bridge |
| | | Superstructure |
| | | Substructure |
| | | Bridge fabrication and modifications |
| | 2.2 Superstructure Erection Procedure |
Chapter 3 - Information from Time of Collapse | |
| | Site Observations Prior to the Collapse |
| | | Bridge erection status up to Thursday, May 11, 1995 |
| | | Friday, May 12, 1995 |
| | | Saturday, May 13 and Sunday, May 14, 1995 |
| | | Monday, May 15, 1995 |
| | | Friday, May 16, 1995 |
Chapter 4 - Chronology of Activities | |
| | 4.1 Site Conditions |
| | | Removal of superstructure |
| | | Underwater examination of girders |
| | | Test sample removal |
| | 4.2 Examination of Steel Superstructure |
| | | Identification |
| | | Cross frame connections |
| | | Girder Conditions |
| | 4.3 Fabrication Issues |
| | | Cross frame to stiffener connection |
| | | Top flange plate length Girder G2 |
| | | Alignment of Girder G1 near Pier 15 |
| | | Field and shop splice bolt groups |
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