An Overview of Recent Irrigation Infrastructure Construction Projects

Transcription

1 Replacing Outdated Infrastructure in Montana October 2010 An Overview of Recent Irrigation Infrastructure Construction Projects Insert photo here Presented by Molly Skorpik at the 2010 Montana Association of Dam and Canal Systems Conference

2 Aging Irrigation Infrastructure Prevalent in Montana Irrigation Infrastructure Installed Over 100 Years Ago Design Life Often Exceeded Funding Issues Replacement Costs Capital Improvements Reserves Most Districts Need Improvements but are Financially Limited Funding Options Critical to Project Reality

3 Case Studies Illustrate Replacement of Infrastructure Daly Ditches Irrigation District Bitter Root Irrigation District

4 Case Studies Illustrate Replacement of Infrastructure Daly Ditches Irrigation District Bitter Root Irrigation District

5 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (1) Background Daly Ditches (DDID) system 1,845 irrigators 14,653 acres Hedge Diversion Bitterroot River 320 Length x 16 width ~ 3 drop Hedge Canal 140 cfs serving ~ 800 irrigators and 6,108 acres over 25 miles Constructed in 1908 Imminent Failure

6 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (2) Project Scope Diversion Dam Boulder (Grouted) Diversion Structure Boater Passage Diversion Apron Concrete Abutment Wall Intake Triple Barrel with Headgates Trash Rack Vertical Plate Fish Screen

7 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (3) Schedule PER Planned Diversion Structure for 2013 Emergency Need ARRA Opportunity Permitting vs Construction Window Construction 2010 Diversion Dam 3 Years Ahead of Schedule

8 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (4) Design July August 2009 Permitting July November 2009 Bidding September 2009 Construction January April 2010

9 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (5) Budget $1,293,500 Includes Design, Permitting, Construction and Construction Admin 5 Grants ~ $943,500 ARRA ~ $280,500 Loan ~ $350,000

10 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (6) Project Complexities Site Conditions Winter Construction River Channel Environmental Considerations Threatened and Endangered Species Multiple Agencies Schedule Emergency ARRA Recreational Considerations

11 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (7) N

12 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (8) N

13 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (9)

14 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (10)

15 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (11)

16 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (12)

17 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (13)

18 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (14)

19 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (15)

20 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (16)

21 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (17)

22 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (18)

23 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (19)

24 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (20)

25 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (21)

26 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (22)

27 Daly Ditches Irrigation District Hedge Diversion Dam Replacement (23)

28 Case Studies Illustrate Replacement of Infrastructure Daly Ditches Irrigation District Bitter Root Irrigation District

29 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (1) Background Bitter Root Irrigation (BRID) system 1,350 irrigators 16,665 acres Siphon 1 Lake Como Irrigators Siphon 1 ~ 5650 Length and 66 /72 Diameter 350 cfs Constructed in 1908 Beyond Repair

30 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (2) Scope (Phase 1 ~ 900 ) Siphon Double Lap Welded Steel Thrust Blocks (Up to 204,500 lbf) Expansion Joints Intake New Structure Retrofit Trash Rack

31 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (3) Schedule Design June August 2009 Permitting July August 2009 Bidding September 2009 Construction December April 2010

32 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (4) Budget $1,366,000 3 Grants ~ $939,500 ARRA ~ $487,500 Loan ~ $508,000

33 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (5) Project Complexities Site Conditions Steep Terrain ~ 66% Winter Construction Schedule ARRA Steel Production vs Construction Schedule

34 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (6)

35 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (7)

36 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (8)

37 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (9)

38 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (10)

39 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (11)

40 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (12)

41 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (13)

42 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (14)

43 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (15)

44 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (16)

45 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (17)

46 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (18)

47 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (19)

48 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (20)

49 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (21)

50 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (22)

51 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (23)

52 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (24)

53 Bitter Root Irrigation District Siphon 1 Phase 1 Replacement (25)

54 Acknowledgements Paul Barteni, Daly Ditches John Crowley, Bitter Root Irrigation Ken Salo, Russ Anderson and Boyd Burnett, Morrison-Maierle

55 Questions???