Figure 1.1

DNR and Weyerhaeuser ownership on the South Fork………….. of the Toutle River

2

Figure 3.1

Silvicultural treatments in period 1……………………………….

4

Figure 3.2

Silvicultural treatments in period 2……………………………….

5

Figure 3.3

Seral stage distribution in 2002…………………………………..

6

Figure 3.4

Seral stage distribution in 2007…………………………………..

6

Figure 3.5

Projected harvest volumes by five year planning period…………

7

Figure 3.6

Harvest volume from clear cutting by five year period…………..

7

Figure 3.7

Harvest volume from thinning by five year period……………….

8

Figure 4.1

Overview of roads.......................…………………………............

1

Figure 4.2

Location of 5100 Washout at base of rock cliff………………………………………..

3

Figure 4.3

Old Herrington Bridge Crossing, viewed from south looking north, across the washout.

4

Figure 4.4

Herrington Bridge Alternative Location…………………………..

5

Figure 4.5

Damage to the 4100 east of the Herrington Bridge……………….

5

Figure 4.6

Locations of culvert failures and road washouts on the 5103 (lowest crossing), the 5140 (midslope crossing) and the 5145 (highest crossing). All crossings are on the same creek.

……………………………….

6

Figure 4.7

5140 washout, viewed from east side of road looking west

6

Figure 4.8

Sample points for studying harvest paths…………………………

9

Figure 5.1

Overview of map of 5100, 5140, 5145 roads...................................

2

Figure 5.2

5600 washout, viewed from south looking north............................

3

Figure 5.3

5140 washout, viewed from east side of road looking west............

4

Figure 5.4

Old Herrington Bridge Crossing, viewed from south looking......... north, across the washout

5

Figure 5.5

Old Herrington Bridge Crossing, viewed on the south side............ of the crossing, looking from east side of the 4100 west

6

Figure 5.6

Overview map of 5103, 5140, 5145 options....................................

8

Figure 5.7

Plan view of 5103 bridge design......................................................

9

Figure 5.8

Profile view of 5103 bridge design and p-line.................................

1

Figure 6.1

FEMA project and bypass overviews..............................................

2

Figure 6.2

FEMA #7, on east side of the 4100 looking north into the.............. main body of the slide

3

Figure 6.3

FEMA #8, on the west side of 4100 lookingeast to the back end....

4

Figure 6.4

FEMA #10, on east side of road looking west.................................

5

Figure 6.5

FEMA #10, viewed from the southwest, looking northeast............

6

Figure 6.6

FEMA # 11, on the west side of the 4100 looking east...................

9

Figure 6.7

Views of west and east portions of 4100 plan view.........................

10

Figure 6.8

Views of west and east portions of 4100 profile view.....................

17

Figure 6.9

4100 alternative route design cost summary....................................

1

Figure 7.1

Schematic of the redesigned 4100 including the............................. proposed bridge site, and the 2730 option that follows the 5600-5605-2730-4250-4200

3

Figure 7.2

ASCII export format of GPS data for use within OTTO.................

4

Figure 7.3

Example of grade data before and after it has been......................... corrected for vertical exageration (2730 option)

8

Figure 7.4

Graphs of speed versus distance in the loaded direction................. for the 2730 and 4100 option from the Herrington Flats Crossing to the 12 Mile Camp Junction

1

Figure 8.1

Overview of main roads in Toutle Block including location of old and new South Toutle bridge crossings

2

Figure 8.2

Failed Herrington Bridge Crossing (old bridge site).

2

Figure 8.3

Failed Herrington Bridge Crossing

3

Figure 8.4

Overview of local area near the new bridge site

4

Figure 8.5

Aerial view (upstream) of recommended bridge site

4

Figure 8.6

Ground view (upstream) of recommended bridge site

5

Figure 8.7

Ground view (downstream) of recommended bridge site

6

Figure 8.8

Setting tight-line anchors on the sout rock face

6

Figure 8.9

Crossing the South Toutle River.

7

Figure 8.10

A moment of anxiety crossing the South Toutle River

8

Figure 8.11

Survey crew using Criterion Laser surveying system

9

Figure 8.12.

Overview of bridge site area and approaches

9

Figure 8.13

Plan view of design contours of the eastern portion of east bridge approach

9

Figure 8.14

Profile view of eastern portion of the east bridge approach

10

Figure 8.15

Plan view of design/contours of the western portion of the east bridge approach.

10

Figure 8.16

Profile view of western portion of the east bridge approach

11

Figure 8.17

Plan view of design/contours of the south bridge approach

11

Figure 8.18

Profile view of south bridge approach

12

Figure 8.19

Plan view of design/contours of the west bridge approach

12

Figure 8.20

Profile view of west bridge approach

13

Figure 8.21

View of South Toutle River from cliffs constraining location of west bridge approach

14

Figure 8.22

Contour view of bridge site area

17

Figure 8.23

Speed and profile vs. L-line station for east bridge approach

17

Figure 8.24

Comparison of speed for normal, no curvature, and no grade for performance analysis of east bridge approach

2

Figure 9.1

Overview of area where the consideredWeyerhaeuser.................... bridge site was located

2

Figure 9.2

Photo of the considered Weyerhaeuser bridge site..........................

3

Figure 9.3

Schematic of the 4158 rock knob attempt........................................

4

Figure 9.4

Schematic of FEMA #14 bypass.....................................................

5

Figure 9.5

Photo of FEMA #14.........................................................................

5

Figure 9.6

Aerial photo of FEMA #14..............................................................

6

Figure 9.7

Schematic of FEMA #6 bypass.......................................................

7

Figure 9.8

Schematic of FEMA #4 bypass.......................................................

9

Figure 9.9

Schematic of 4100 bypass................................................................

10

Figure 9.10

Schematic of area containing FEMA #12 and #13..........................

11

Figure 9.11

Photo of FEMA #12.........................................................................

13

Figure 9.12

Overview of 5103 road system........................................................

14

Figure 9.13

Aerial view of 5100 washout...........................................................

15

Figure 9.14

Schematic of 5601 connector to 5103..............................................

17

Figure 9.15

Schematic of 14 Creek alternative route..........................................

18

Figure 9.16

Schematic of 4100 connector to 5650..............................................

19

Figure 9.17

Schematic of 5650 to 4100 connector..............................................