1. ROCK ISLAND DISTRICT Mississippi River Maintenance Spare Miter Gates

3. Mississippi River Project Location Map / Field Sites

4. Mississippi River Project Office Location: Near LeClaire Ia. Lock and Dam No. 14 & Auxiliary

5. Spare Gate System The spare miter gates are constructed from a set of 8 modules of varying heights. The modules are stacked to match the height of the service gate they are replacing. Each set includes the modules to construct a gate for either or both sides and the barge to store them. The barge includes vacant pads to assemble the gate, store up to two service gates, rigging and bolting required to assemble the gate.

6. Spare Gate Info Three Spare Gate Barges with gates are currently in service with one under construction The two in service and the third under construction are very similar and fit the same locks. One barge with accompanying gate sections will only fit Locks 19,26, and 27.

7. Spare Gate Info The first gate barge was constructed in 1941 at Ingalls Shipyard. It is 274 feet long and 40 feet wide. The second barge is very similar and is the same length but is 50 feet wide. The third barge is under construction at Eastern Shipyard. It will be 40 feet wide and 300 feet long. The largest barge is unique and only accommodates horizontally framed gates at Locks 19,26,&27. It measures 61’3” wide by 322’-9” long.

8. Spare Gate Top Section With Section to be Removed

9. Attaching New Section to Top

10. Pick Up New Section

11. Reattach Bottom Section

12. St. Paul District Main Gates UpperMain Gates LowerAux Gates UpperAux Gates Lower Lock Height UnitsBankHeightUnitsBankHeightUnitsHeightUnits 227'-0"AFECR30'-0"AGCR20'-0"ADB31'-9 5/8"AHGC 325'-0"AECR30'-0"AGCR27'-0"AFEC 420'-0"ACL23'-0"ADCL20'-0"AC 520'-0"ACR23'-0"ADCR23'-0"ADC 5A27'-0"AFECR27'-0"AFECR27'-0"AFEC 623'-0"ADCL25'-0"AECL25'-0"AEC 723'-0"ADCR25'-0"AECR23'-0"ADC 827'-0"AFECL30'-0"AGCL27'-0"AFEC 927'-0"AFECL33'-0"ADGCL30'-0"AGC 1025'-0"AECL30'-0"AGCR30'-0"AGC

13. Rock Island District Main Gates UpperMain Gates LowerAux Gates UpperAux Gates Lower LockHeightUnitsHeightUnitsBankHeightUnitsHeightUnits 1125'-0"AEC30'-0"AGCR30'-0"AGC 1225'-0"AEC30'-0"AGCR30'-0"AGC 1325'-0"AEC30'-0"AGCL30'-0"AGC 1423'-0"ADC27'-0"AFECR 1531'-9 5/8"AHGC31'-9 5/8"AHGCL31'- 9 5/8"AHGC31'-9 5/8"AHGC 1623'-0"ADC27'-0"AFECL25'-0"AEC

14. Rock Island District Main Gates UpperMain Gates LowerAux Gates UpperAux Gates Lower LockHeightUnitsBankHeightUnitsBankHeightUnitsHeightUnits 1725'-0"AECL30'-0"AGCL27'-0"AFEC 1823'-0"ADCL30'-0"AGCL23'-0"ADC 1925'-0"Vert.LR53'-2"R 2020'-0"ACR27'-0"AFECR27'-0"AFEC 2127'-0"AFECL33'-0"ADGCL33'-0"ADGC 2227'-0"AFECR33'-0"ADGCR30'-0"AGC

15. Rock Island District Illinois Locks Main Gates Upper Main Gates Lower Aux Gates Upper Aux Gates Lower Lock HeightUnitsHeightUnitsHeightUnitsHeightUnits Peoria17'-6"ABNA LaGrange17'-6"ABNA

16. St. Louis District Main Gates UpperMain Gates LowerAux Gates UpperAux Gates Lower LockHeightUnitsBankHeightUnitsBankHeightUnitsHeightUnits 2425'-0"AECR33'-0"AHGCR30'-0"AGCNA 2527'-0"AFECR35'-0"AEGCR35'-0"AEGCNA

17. Weight of Service Gates WEIGHT OF ONE GATE LEAF WITHOUT MUD AND ICE HEIGHTWEIGHT IN TONS 2065 2374 2578 2782 3090 3396

18. Spare Gate “A” Section

19. Spare Gate Section “C”

20. Spare Gate Section “D”

21. Spare Gate Section “E”

22. Spare Gate Section “F”

23. Spare Gate Section “G”

24. Spare Gate Section “H”

25. “Quad Cities” Gate Lifter

26. TESTING THE QUAD CITIES 220 TON AT 60 FT. RADIUS

27. Quad Cities Picking Lock 19 Gate

28. Setting Spare Gate Lock 19

29. Removing Spare at Lock 19

30. Removing top half of Spare

31. MV BETTENDORF, QUAD CITIES, SPARE GATE BARGE, & CARGO BARGES

32. MV BETTENDORF & TOW

34. MV ROCK ISLAND PUSHING PART OF STRUCTURE MAINTENANCE PLANT

35. MV ROCK ISLAND & TOW

37. Maintenance Support Our maintenance crews are available and looking for work the Winter of 2006-2007 We can provide crane support up to 350 tons with the Quad Cities. We can provide mechanical dredging, debris removal or rock placement with two modern crane barges accompanied with reliable push boats. We have extensive experience with gate repairs or any related heavy steel field fabrication and construction

38. Old River Lock 85’ Miter Gate & Quad Cities

39. ASSISTED GATE CHANGE INDUSTRIAL CANAL LOCK - New Orleans District

40. Mechanical Dredging

41. Contact Information James B. Wilson Chief Mississippi River Maintenance Section James.b.wilson@usace.army.mil 309-794-4500