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John Day Lock

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Navigation Lock 110 ft, Single Lift, 86 x 369 ft. Emergency Repairs 2002/2003 $ 14,000,000 ... Leaking lift lines. M27. M29. Structural Issues. Horizontal ... – PowerPoint PPT presentation

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Title: John Day Lock


1
John Day Lock Dam Inland Waterways Users
BoardPaducah, KY July 13, 2006Sheryl A
Carrubba, PEOperations ManagerChannels and
Harbors ProjectPortland District Corps of
Engineers
2
JOHN DAY LOCK DAM
Non Overflow Section
North Embankment
Spillway
Powerhouse
Navigation Lock
3
Project Overview
  • Completed April 1968
  • Const. Cost 512,400,000
  • Lake Flood Storage 500,000 acre-ft
  • Powerhouse 16 units 2,200,000 KW
  • Navigation Lock 110 ft, Single Lift,
  • 86 x 369 ft
  • Emergency Repairs 2002/2003 14,000,000

4
Project Overview
Navigation Lock
  • Down Stream Lock Gate

5
North Wall Now Cracking Like the South Wall
Structural Issues
Navigation Lock
6
Horizontal Cracking on Monolith bases
Structural Issues
M27
M29
Leaking lift lines
7
Movement During Lockage
0.5
0.7
Movement During Lockage
8
Lock Wall Movement Analysis
9
North Wall Un-repaired Crack
10
Cumlulative Number of Lockages
11
Interim Structural Repairs
  • Concrete Monolith Repairs to Cracked Monoliths 8
    and 27
  • Emergency Repairs 3 Months of Design and a
    Forced Outage for 1 month.
  • Cost of Emergency Repairs for 2 of the 30
    monoliths 14 Million
  • Water Still Leaking from Foundation Through
    Anchors.

12
Additional Structural Issues
  • Downstream Guidewall
  • Actively Failing Due to Corrosion and Material
    Loss
  • Designed as a Sheet Pile Cell with Concrete Cap
  • Sheet Pile Gone Actively Losing Material
  • Loss of Navigation
  • Estimate 2M repair

13
John Day Est. Schedule
  • FY06
  • Purchase Ropes Assemblies.
  • Cost 350k (Advertising Contract)
  • FY07
  • Install new ropes bearings,
  • Purchase critical spares
  • Begin Major Rehab Report Mainly Scoping
  • FY 08 FY 2010
  • Continue Major Rehab Report define problems and
    alternative solutions
  • FY 2011 Begin Major Rehab repairs
  • High Cost

14
ONGOING Structural Repairs on Columbia Snake
System
North Jetty 2.5 mi long (4.02 km) South Jetty
6.6 mi long (10.62 km) Spur Jetty 0.3 mi long
(0.48 km)
Mouth of the Columbia River Interim Jetty
Repairs Approx. 23M
South Jetty Head 4000 ft loss in length (1200 m)
15
QUESTIONS ??
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