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Level 2 BIM - RPW Level 2 BIM Scour Survey RPW Inspection Case Study Level 2 BIM - RPW 1 Scour Survey Level 2 BIM - RPW 2 Scour Survey Level 2 BIM - RPW 3 Scour Survey Level 2 BIM - RPW 4 Scour Survey Level 2 BIM - RPW 5 Level 2 BIM - RPW 6 20 07 20 05 No. Scour Surveys 25 20 03 20 01 19 99 19 97 19 95 19 93 19 91 19 89 19 87 19 85 19 83 19 81 19 79 19 77 19 75 19 73 19 71 19 69 19 67 19 65 19 63 19 61 19 59 Scour Survey 40 35 30 Profile Contour 20 15 10 5 0 Scour Survey Number Of Structures Level 2 BIM - RPW 7 Priority Initial Latest 1 60 38 2 68 70 3 41 65 Scour Survey Level 2 BIM - RPW 8 Scour Survey Level 2 BIM - RPW 9 RPW Inspection Embankment Spurs Spurs Guidebank Grade Control Structure High Dyke 1 Relative Stability 2 3a 3b Low 4 5 High Level 2 BIM - RPW 10 Relative Stability Low RPW Inspection Priority Description No. Sites 1 Multi-channel Gravel Bed 93 2 Active Gravel Bed 48 3 Active Meander 66 Level 2 BIM - RPW 11 RPW Inspection Level 2 BIM - RPW 12 RPW Inspection Level 2 BIM - RPW 13 RPW Inspection Level 2 BIM - RPW 14 Case Study Table 1 Recent Key Findings of the Scour Monitoring Program File Stream Location Highway Type Observations 315 St. Mary's River Cardston M5 Contour Significant local scour at one pier Angle of attack > 50° Consider river protection measures 1153 Oldman River Lundbreck M22 Contour Stream to Bottom of Footing = 1.0 m Top of Footings Exposed Check competency of bedrock Consider protective rock apron 1741 Highwood River Longview M22 Contour North abutment under attack Slope stability affected River protection system designed 1843 Fallentimber Creek Bergen Local Handrail River protection works required 1963 James River Sundre Local Handrail Scour due to channel alignment changes River protection works required 7447 Bow River Bow City SH539 Contour Stream to Bottom of Footing = 3.2 m Pier concrete deteriorating Scour protection measures required Review condition of piers 71663 Little Smoky River High Prairie Local Contour Channel lowered due to 1996 flood Determine depth of foundation Assess need for protection measures 75194 Simonette River Goodwin SH734 Contour Slope failure of upstream bank Evaluate and repair upstream bank 78104 McLeod River Peers M32 Contour Stream to Bottom of Footing = 2.1 m Angle of attack is 60° Protective measures required Consider apron and guidebanks 70247 McLeod River Edson Local Handrail Stream to Bottom of Footing = 1.2 m Conduct detailed survey 71429 Elbow River Bragg Creek M66 Handrail Top of Footing exposed Conduct detailed survey 74381 North Saskatchewan River Drayton Valley M22 Contour Severe scour at piers, spur River protection works being designed 74710 Berland River Entrance M40 Handrail Stream 0.75 m below pile cap Protection measures required Level 2 BIM - RPW 15 Action Case Study BF78104 McLeod River near Peers Hwy 32 Level 2 BIM - RPW 16 Case Study Level 2 BIM - RPW 17 Case Study Level 2 BIM - RPW 18 Case Study Level 2 BIM - RPW 19 Case Study Level 2 BIM - RPW 20 Case Study Level 2 BIM - RPW 21 Case Study Level 2 BIM - RPW 22 Case Study Level 2 BIM - RPW 23 Case Study Level 2 BIM - RPW 24 Case Study Level 2 BIM - RPW 25 Case Study Level 2 BIM - RPW 26 Case Study Level 2 BIM - RPW 27 Case Study Level 2 BIM - RPW 28 Case Study Level 2 BIM - RPW 29