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with the bridge. He made the additional notes with a finer pencil, and thus he was found out and due to his long record of good service, given one-year of probation rather than fired. Also, on the weekend leading up to the collapse, residents had complained about an increase in strange noises and vibrations coming from the bridge, including what one resident described as ″like thousands of birds chirping″, but no action was taken.
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completed in 1992 and eliminated the pin-and-hanger assemblies that caused the collapse of the original bridge. The new wider bridge also features full left and right-hand shoulders, a feature absent from the old bridge. Many other bridges in
Connecticut were also retrofitted after the collapse to prevent what happened to cause the bridge to collapse.
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on
Tuesday, June 28, 1983. Three people were killed and three more were seriously injured when two cars and two tractor-trailers fell with the bridge into the Mianus River 70 feet (21.3 m) below. Greenwich Police were first on scene Ptl Peter Dominziano on top & Ptl Nick Macaluso under the bridge
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The Mianus River Bridge was completely reconstructed in the late 1980s and early 1990s. Work included replacing all of the structural steel, rebuilding and expanding the bridge deck to accommodate a wider roadway, and repairing the bridge piers to extend their service life. The replacement span was
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in West
Virginia in December 1967. The collapse also came as a surprise, considering the bridge underwent and allegedly passed a DOT inspection just nine months prior. After the collapse, one of the inspectors altered his notes to add 20 additional notes to appear as if he had observed the problems
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investigation concluded that the collapse occurred due to ″deficiencies in the State of
Connecticut's bridge safety inspection and bridge maintenance program.″ They cited corrosion from water buildup due to inadequate drainage as a cause. During road mending some 10 years before, the highway drains
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After the collapse, the almost 90,000 vehicles that used the bridge daily were diverted onto US-1 and local streets in
Greenwich, causing the worst traffic problems the town had ever seen. The Town of Greenwich Health Department monitored the environmental impact, providing advice through the
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issuance of special bulletins to residents along the temporary routes. The interstate was not fully reopened until
September, and then only with a temporary truss carrying two lanes of northbound traffic instead of the usual three. In total, final repairs cost over $ 20 million.
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at a sharp corner on the pin. When it failed catastrophically, the deck was supported at just three corners. When two heavy trucks and a car entered the section, the remaining expansion joint failed, and the deck crashed into the river below.
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that night, stopped upon spotting the crash and brought the other cars to a stop, likely preventing more falls. Many residents were also woken up due to the sound of the collapse, which shook houses and was "like a clap of thunder".
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350:. At the time of the disaster, the state had just 12 engineers, working in pairs, assigned to inspect 3,425 bridges. The collapse came despite the nationwide inspection procedures brought about by the collapse of the
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Governor
William O'Neill afterward proposed a $ 5.5 billion transportation spending package to pay for rehabilitation and replacement of bridges and other transportation projects in Connecticut.
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had been deliberately blocked and the crew failed to unblock them when the road work was completed. Rainwater leaked down through the pin bearings, causing them to rust. The outer bearings were
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and non-redundant, a design flaw of this particular type of structure. The bearings were difficult to inspect close-up, although traces of rust could be seen near the affected bearings.
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formed within the bearing of the pin, exerting a force on the hanger which was beyond design limits for the retaining clamps. It forced the hanger on the inside part of the
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at the southeast corner off the end of the pin that was holding it, and the load was shifted to outside hanger. The extra load on the remaining hanger started a
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245:. It is the second bridge on the site. The original bridge collapsed in 1983, killing three motorists. The replacement span is officially named the
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Highway
Accident Report–Collapse of a Suspended Span of Interstate Route 95 Bridge over the Mianus River, Greenwich, Connecticut, June 28, 1983
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Casualties from the collapse were few because the disaster occurred at 1:30 a.m., when traffic was low on the often-crowded highway.
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In 1992, the bridge was officially named the
Michael L. Morano Bridge, after a state senator who represented nearby Greenwich.
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501:"Mianus River Bridge Collapses – Today in History: June 28 - Connecticut History | a CTHumanities Project"
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that held the deck in place on the outer side of the bridge, according to an investigation by the
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The bridge in 1977. The 1983 collapse happened in the easternmost southern section (visible right)
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579:"Collapse of a Suspended Span of Inter- state Route 95 Highway Bridge over the Mianus River"
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after calls came in to GPD Dispatch Center which also notified CSP and The town's
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The incident was also blamed on inadequate inspection resources in the state of
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679:"The View From/Bridgeport; With Ridership Rising, Ferry Gets a New Ship"
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This article is about the highway bridge. For the railroad bridge, see
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A 100-foot (30.5 m) section of the bridge's deck on its northbound
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Some areas with "Greenwich, Connecticut" postal addresses are in
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Nguyen, Hoa (August 2, 2007). "Deadly Mianus disaster recalled".
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747:(Report). National Transportation Safety Board. June 19, 1984.
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were called while
Greenwich Police blocked off the highway as
474:"Year after bridge collapse, questions and pain still linger"
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came in with helicopters. An unnamed man, traveling to
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Rebuilt buildings and structures in the United States
764:- Archival news footage of the disaster via YouTube.
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639:"June 28: The Mianus River Bridge Disaster on I-95"
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529:Why buildings fall down : how structures fail
302:The collapse was caused by the failure of two
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1304:Bridge disasters caused by maintenance error
662:: CS1 maint: numeric names: authors list (
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532:. Mario Salvadori. New York: W.W. Norton.
330:Pin and hanger assembly used on the bridge
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712:"Issue Focus: Transportation & Tolls"
1369:Building and structure collapses in 1983
1354:Bridges on the Interstate Highway System
1339:Bridges in Fairfield County, Connecticut
1197:United States Post Office Greenwich Main
567:. Stamford, Connecticut. pp. 1, A4.
142:Connecticut Department of Transportation
1329:Transportation disasters in Connecticut
1281:. These areas are not in this template.
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762:. WTNH News8 (YouTube). June 28, 2013.
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1299:Bridge disasters in the United States
1249:Greenwich International Film Festival
369:Bridgeport & Port Jefferson Ferry
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760:"1983: Mianus River Bridge Collapse"
582:National Transportation Safety Board
308:National Transportation Safety Board
1364:Girder bridges in the United States
1334:1983 disasters in the United States
1359:Former toll bridges in Connecticut
1319:1958 establishments in Connecticut
893:Greenwich Avenue Historic District
677:Cavanaugh, Jack (August 1, 1999).
472:Jeffrey, Schmalz (June 24, 1984).
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16:I-95 bridge in Greenwich, CT, US
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996:International School at Dundee
637:kathyfoley21 (June 28, 2022).
620:"Mianus River Bridge Collapse"
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918:Putnam Hill Historic District
871:Fourth Ward Historic District
451:"Mianus Bridge Disaster 1983"
1146:Mianus River Railroad Bridge
1023:Greenwich Country Day School
928:Round Hill Historic District
834:Mianus River Bridge collapse
643:Today in Connecticut History
21:Mianus River Railroad Bridge
1344:Road bridges in Connecticut
1028:Japanese School of New York
1008:Convent of the Sacred Heart
881:Glenville Historic District
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1192:Sylvanus Selleck Gristmill
1156:Methodist Episcopal Church
1120:Great Captain Island Light
624:I-35W Bridge Collapse wiki
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304:pin and hanger assemblies
280:United States Coast Guard
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1324:Disasters in Connecticut
1275:This list is incomplete.
1135:Indian Harbor Yacht Club
986:Greenwich Public Schools
249:, after a state senator
247:Michael L. Morano Bridge
133:Michael L. Morano Bridge
1182:Riverside Avenue Bridge
1151:The Nathaniel Witherell
824:Murder of Martha Moxley
431:List of bridge failures
269:collapsed at 1:30 a.m.
225:is a span that carries
799:Greenwich, Connecticut
577:Staff (July 19, 1984)
526:Levy, Matthys (1992).
426:Connecticut portal
414:Engineering portal
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243:Riverside, Connecticut
1228:Old Greenwich station
1202:William E. Ward House
1166:Old Greenwich station
1105:Cos Cob Power Station
991:Greenwich High School
594:"Mianus River Bridge"
329:
73:41.03667°N 73.59194°W
1279:Banksville, New York
959:Great Captain Island
598:Failure Case Studies
402:Transport portal
231:Connecticut Turnpike
1207:Josiah Wilcox House
1125:Greenwich Town Hall
1110:Samuel Ferris House
505:Connecticut History
223:Mianus River Bridge
169:70 feet (21 m)
78:41.03667; -73.59194
69: /
32:Mianus River Bridge
1265:Greenwich Hospital
1171:Phebe Seaman House
1130:Greenwich Y.M.C.A.
718:. October 14, 2018
716:Greenwich Sentinel
683:The New York Times
479:The New York Times
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179:Construction start
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1013:Eagle Hill School
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251:Michael L. Morano
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109:Mianus River
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977:Primary and
954:Calf Island
348:Connecticut
233:) over the
92:6 lanes of
76: /
51:Coordinates
1293:Categories
1258:Healthcare
923:Rock Ridge
913:Pemberwick
852:Areas and
457:August 31,
437:References
237:, between
64:73°35′31″W
61:41°02′12″N
970:Education
933:Riverside
876:Glenville
845:Geography
691:0362-4331
648:March 13,
604:March 13,
511:March 13,
359:Aftermath
255:Greenwich
203:Collapsed
123:Riverside
1137:building
658:cite web
548:24468105
485:July 26,
389:See also
278:and the
261:Collapse
211:Location
1242:Culture
947:Islands
866:Cos Cob
817:History
809:History
722:May 15,
696:May 12,
288:Atlanta
239:Cos Cob
195:Rebuilt
174:History
119:Cos Cob
105:Crossed
89:Carried
1047:Closed
903:Mianus
689:
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298:Causes
187:Opened
157:Girder
153:Design
115:Locale
1074:Other
861:Byram
745:(PDF)
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241:and
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271:EDT
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