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Memo: Compliance with the Nat'l Bridge Inspection Standards - Scour Evaluations
ACTION: Compliance with the National Bridge Inspection Standards -- Scour Evaluations
Attachment
State
Bridges Over Waterways
Scour Screening
Scour Evaluations
Low Risk
Scour Susceptible
Unknown Foundations
Tidal
Scour Critical
Total Screened
%
Total Evaluated
Evaluation Candidates
%
Culverts
Screened
Assessed
Total
AK
810
34
0
372
406
0
201
53
150
810
100
556
53
91
AL
14114
5618
0
2405
8023
3241
2658
1
191
14114
100
8214
3242
72
AR
11623
2304
0
3518
5822
0
5548
0
253
11623
100
6075
0
100
AZ
5561
3482
40
956
4478
71
172
0
840
5561
100
5278
111
98
CA
15386
2910
2507
5536
10953
412
3661
29
324
15379
100
8770
2955
75
CO
6793
1339
0
4987
6326
12
38
0
417
6793
100
6743
12
100
CT
2365
576
0
1272
1848
39
67
0
411
2365
100
2259
39
98
DC
94
0
0
93
93
0
0
0
1
94
100
94
0
100
DE
576
181
0
270
451
0
0
0
125
576
100
576
0
100
FL
8340
1702
576
3018
5296
121
2574
99
250
8340
100
4970
796
86
GA
12119
5381
1625
754
7760
0
4283
0
76
12119
100
6211
1625
79
HI
860
130
50
566
746
24
11
2
64
847
98
760
89
90
IA
23482
3218
705
14805
18728
95
3878
0
781
23482
100
18804
800
96
ID
3209
1073
0
1284
2357
0
587
0
265
3209
100
2622
0
100
IL
21641
3914
160
15633
19707
3
1272
0
614
21596
100
20161
208
99
IN
15903
1001
0
12703
13704
56
444
0
1699
15903
100
15403
56
100
KS
23803
6100
57
15685
21842
1432
93
0
441
23808
100
22226
1484
94
KY
11225
2641
0
8110
10751
11
424
0
39
11225
100
10790
11
100
LA
9891
0
0
3573
3573
0
5473
0
845
9891
100
4418
0
100
MA
2464
282
0
706
988
215
395
1
865
2464
100
1853
216
90
MD
3163
1017
0
992
2009
0
560
0
594
3163
100
2603
0
100
ME
1867
272
0
1039
1311
18
191
112
235
1867
100
1546
130
92
MI
7575
1111
0
2700
3811
2375
709
0
680
7575
100
4491
2375
65
MN
11331
4460
31
5474
9965
377
509
0
480
11331
100
10414
408
96
MO
20912
4026
0
16435
20461
308
18
0
101
20888
100
20562
332
98
MS
14790
2269
0
3137
5406
14
8608
0
762
14790
100
6168
14
100
MT
3578
154
304
1289
1747
34
1746
0
51
3578
100
1494
338
82
NC
14180
4549
67
3296
7912
14
6092
81
81
14180
100
7926
162
98
ND
4129
793
21
1130
1944
4
2097
0
84
4129
100
2007
25
99
NE
14808
2827
11
2658
5496
1229
7615
0
441
14781
100
5926
1267
82
NH
1755
163
80
1388
1631
30
50
0
44
1755
100
1595
110
94
NJ
3551
316
0
2428
2744
49
344
40
367
3544
100
3111
96
97
NM
3001
1563
172
671
2406
73
498
0
24
3001
100
2258
245
90
NV
889
555
31
114
700
33
53
0
102
888
100
771
65
92
NY
12090
1589
0
9520
11109
61
62
192
666
12090
100
11775
253
98
OH
23326
1338
0
16283
17621
5273
241
0
191
23326
100
17812
5273
77
OK
20835
5981
8
14345
20334
0
0
0
501
20835
100
20827
8
100
OR
5495
266
0
1824
2090
16
1877
67
1442
5492
100
3532
86
98
PA
17328
1680
886
7315
9881
1442
461
0
5544
17328
100
14539
2328
86
PR
1605
244
63
758
1065
26
372
33
109
1605
100
1111
122
90
RI
337
30
0
176
206
0
0
0
131
337
100
337
0
100
SC
7784
1054
0
1170
2224
0
3704
155
1701
7784
100
3925
155
96
SD
5373
1000
0
1653
2653
136
2584
0
0
5373
100
2653
136
95
TN
16520
7816
0
6022
13838
391
1236
0
1055
16520
100
14893
391
97
TX
40772
16919
0
12654
29573
913
9581
55
650
40772
100
30223
968
97
UT
1682
435
0
527
962
101
447
0
172
1682
100
1134
101
92
VA
9818
2747
0
7014
9761
2
0
0
55
9818
100
9816
2
100
VT
2304
68
0
1348
1416
373
246
0
298
2333
101
1714
344
83
WA
5133
147
0
3627
3774
41
295
0
965
5075
99
4739
99
98
WI
10689
1682
0
6722
8404
215
2002
0
68
10689
100
8472
215
98
WV
5742
350
4
3404
3758
25
1735
0
225
5743
100
3979
28
99
WY
1925
402
9
1063
1474
28
421
0
2
1925
100
1467
37
98
Nationwide
484546
109709
7407
234422
351538
19333
86133
920
26472
484396
370603
27810
Percent
22.6%
1.5%
48.4%
72.5%
4.0%
17.8%
0.2%
5.5%
100.0%
93.0%
7.0%
This page last modified on 11/17/05