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Title:

HIGHWAY ACCIDENT REPORT--COLLAPSE OF A SUSPENDED SPAN OF INTERSTATE ROUTE 95 HIGHWAY BRIDGE OVER THE MIANUS RIVER, GREENWICH, CONNECTICUT, JUNE 28, 1983

Accession Number:

00394043

Record Type:

Monograph

Availability:

National Technical Information Service

5301 Shawnee Road
Alexandria, VA 22312 USA
Order Number: PB84-916203

Abstract:

At 1:30 a.m., e.d.t., on June 28, 1983, a 100-foot-long suspended span between piers 20 and 21 of the eastbound traffic lanes of the Interstate Route 95 highway bridge over the Mianus River in Greenwich, Connecticut, collapsed and fell 70 feet into the river below. Two tractor-semitrailers and two automobiles plunged into the void in the bridge and were destroyed by impact from the fall. Three vehicle occupants died, and three received serious injuries. The National Transportation Safety Board determines that the probable cause of the collapse of the Mianus River bridge span was the undetected lateral displacement of the hangers of the pin and hanger suspension assembly in the southeast corner of the span by corrosion-induced forces due to deficiencies in the State of Connecticut's bridge safety inspection and bridge maintenance program.

Report/Paper Numbers:

NTSB/HAR-84/03
HS-037 773

Corporate Authors:

National Transportation Safety Board

Bureau of Accident Investigation, 800 Independence Avenue, SW
Washington, DC 20594 USA

Pagination:

111 p.

Publication Date:

1984-7-19

Features:

Appendices (6) ; Figures; Tables

Uncontrolled Terms:

Subject Areas:

Bridges and other structures; Design; Highways; Maintenance and Preservation; Safety and Human Factors; I24: Design of Bridges and Retaining Walls; I80: Accident Studies

Source Agency:

National Highway Traffic Safety Administration

1200 New Jersey Avenue, SE
Washington, DC 20590 USA

Files:

HSL, TRIS, USDOT

Created Date:

May 31 1985 12:00AM