Bridge Collapse. Minneapolis Public Works Department. Presented by Steven Kotke, P.E. - Director of Public Works

Transcription

1 Bridge Collapse Minneapolis Public Works Department Presented by Steven Kotke, P.E. - Director of Public Works 1

2 St. Anthony Falls I-35W Bridge History Construction started in 1964 Opened to traffic in feet high, 1,907 feet long, 14 spans Four lanes of traffic in each direction Carried 140,000 vehicles daily (Year 2007) Source: MnDOT I-35W Bridge - Looking North July,

3 Before I-35W Bridge Downtown Minneapolis University of Minnesota 3

4 Before

5 Before

6 August 1,

7 The Collapse I-35W Bridge collapses into the Mississippi and onto its banks during rush hour More than 100 injuries 13 deaths Approximately 180 people and 120 vehicles on the bridge at the time of collapse 7

8 ...and After 8

9 9

10 10

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12 Multiple Jurisdictions FHWA Mn/DOT Hennepin County City of Minneapolis MPRB Corp of Engineers Coast Guard U of M 12

13 August 1 August 1 st Timeline 6:05 p.m. first 911 call received 6:11 p.m. first emergency units on scene 6:20 p.m. Emergency Operations Center (EOC) activated Unified incident command established at the scene 7:55 p.m. All survivors rescued from the scene 13

14 City of Minneapolis Emergency Operations Center (EOC) Located in the basement of City Hall Activated when a largescale disturbance or event involves multiple City departments or agencies 14

15 Emergency Response Medical Care Fire & Rescue Law Enforcement 15

16 Minneapolis Fire/Rescue Operations Established Incident Command once first fire vehicle arrived at the scene at 6:11 Unified command established on 10 th Ave. Bridge (ran parallel to I-35W bridge) 16

17 Minneapolis Fire/Rescue Operations Collapsed Structure 17

18 Minneapolis Fire/Rescue Operations Vehicle fires 18

19 Minneapolis Fire/Rescue Operations Hazardous Materials 19

20 Minneapolis Fire/Rescue Operations EMS 20

21 Hennepin County Sheriff Dive Team - Water Rescue - - Victim Recovery Navy Divers 21

22 Recovery Efforts August 2nd MPD takes Incident Command at 4 p.m. (end of rescue, start of recovery) Maintains perimeter security Divers from Hennepin County perform recovery August 10th Mn/DOT Takes Incident command from 4:00 p.m. 22

23 Public Works Overview Initial Response First 24 Hours Ongoing Collapse Issues Rebuilding The Bridge 23

24 Public Works Initial Response Assisting Rescue Efforts Inspection Boats Barricades Road Closures Lights Generators Heavy Construction Machinery Other Equipment Traffic Issues 24

25 Public Works Initial Response Traffic Issues Area wide detours I-35W TH

26 Public Works Initial Traffic Issues Local Streets University Ave/4 th Street 2 nd Street West River Road Washington Ave Bridges Stone Arch Bridge 9 10 th Avenue Bridge 26

27 Public Works Organizational Assignments Fleet Services Property Services Transportation Planning & Engineering Surface Water & Sewers On-going Collapse Issues Traffic & Parking Public Works Solid Waste & Recycling 35W Rebuilding Management Transportation Maintenance & Repair Water Treatment & Distribution Administratio n & Management 27

28 On-going Collapse Issues Communication Efforts Daily meetings with agency partners City elected official briefings Centralized info by Communications Dept (web was key communication tool, City s 311, media requests, etc.) Citizen Involvement and Input Meetings with various neighborhood groups, legislators and with city council members Old traffic issues take on new life Speed and cut through traffic 28

29 On-going Collapse Issues Assist with debris issues Vehicles removed and handled at City impound lot 29

30 On-going Collapse Issues Traffic Management Street closures (adjusted hard and soft closures) Continued use of Traffic Control Agents Defined secondary detour routes (20 to 120% Higher Volume More traffic data early September after school started Retimed signals in NE quadrant of the City (over 300 signals retimed) Lane additions, restrictions and prohibitions 30

31 Significant Changes in Traffic Volumes Over 200 traffic counts conducted (20 to 120% higher) 31

32 On-going Collapse Issues Pedestrian View Areas First reopened Stone Arch Bridge in a week Second reopened Bridge 9 after recovery completed in mid August The view desired by the public from the 10 th Avenue bridge 32

33 On-going Collapse Issues Reimbursement Mind your paper work FEMA FHWA & DDIR s 33

34 35W Rebuilding (City efforts) City Concerns, Needs and Issues North Bank South Bank City utility impacts Storm water implications ROW impacts 34

35 35W Rebuilding (City efforts) Statement of Principles Rebuilding the 35W Bridge adopted by City Council Meet present and future transportation needs Improve vehicle and transit capacity LRT/BRT-ready Support and identify funding to address other transportation needs Meet all current environmental standards New fifth lanes dedicated for transit/hov Equal Employment Opportunity goals are equal to the City s Memorial should be created Provide and seek community input on design and construction process 35

36 River dredging operations Main Street portal (80 ) 2 nd Street Safety at NB ramp to Univ. Ave Bridge profile vs. future freeway under Univ/4 th St Utilities crossing and parallel 35W -- North Bank City Concerns, Needs and Issues 36

37 West River Parkway Bridge 9 Trail Extension 14 th Avenue impacts Future South Bank freeway access Utilities crossing and parallel 35W - South Bank City Concerns, Needs and Issues 37

38 New 35W Bridge Layout Existing = 8 lanes & narrow shoulders Future = 10 lanes & wide shoulders Municipal Consent Capacity Access ROW 38

39 What worked well at this incident? EOC using NIMS, Emergency Operations Plan, and Mutual Aid Partners Traffic Management coordination with all agencies Involvement in Design-Build Selection Process Response successful due to good Relationships (past and new) Communications Planning 39

40 Federal, State, County and City: Cooperation at all Levels Made It Work Thank you to everyone for their condolences and offers of support. 40