Ayres Knowledge Center Scour Evaluation: Bridges with Unknown Foundations | Page 24
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Pier/Bent Groundline
Elevation
(ft) Initial
Embedment
1
(ft) Contraction
Scour
(ft) Local
Scour
(ft) Total
Scour
(ft) Scour
Elevation
(ft) Remaining
Embedment
(ft)
Bent 16 (2W)
Bent 17 (1W)
Bent 18 (1E) -14.1
-13.9
-14.4 16.3
2
16.5
2
16.5 1.4
1.4
1.4 2.5
17.2
16.5 3.9
18.6
17.9 -18.0
-32.5
-32.3 12.4
3.5
3.7
1
16.5 feet embedment calculated for bascule piers, and applied globally to the interior pile bents per the Phase 1
report.
2
Top of piles for bascule piers 17 and 18 are 5.6 feet and 5.1 feet below the existing streambed elevation,
respectively.
Pier/Bent
Bent 16 (2W)
Bent 17 (1W)
Bent 18 (1E)
Groundline
Elevation Initial
Embedment
(ft) (ft)
-14.1
-13.9
-14.4 16.3
2
16.5
2
16.5
1
Contraction
Scour
Local
Scour
Total
Scour
Scour
Elevation
Remaining
Embedment
(ft) (ft) (ft) (ft) (ft)
2.2
2.2
2.2 2.6
18.9
18.4 4.8
21.1
20.6 -18.9
-35.0
-35.0 11.5
1.0
0.9
1
16.5 feet embedment calculated for bascule piers, and applied globally to the interior pile bents per the Phase 1
report.
2
Top of piles for bascule piers 17 and 18 are 5.6 feet and 5.1 feet below the existing streambed elevation,
respectively.
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Page SR-22
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