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Field Observations and Evaluations of Streambed Scour At Bridges

Publication Number: FHWA-RD-03-052
Date: May 2005

Field Observations and Evaluations of Streambed Scour At Bridges

APPENDIX A:PIER SCOUR FIELD DATA

Table 24. Pier scour observations, continued.

Meaurement	Site	State	Date	Time	Pier	Upstream/ Downstream	Pier Type	Pier Shape	Pier Width (m)	Pier Length (m)	Skew (deg)	Velocity (m/s)	Depth (m)	Debris Effects	Bed Material	D16 (mm)	D50 (mm)	D84 (mm)	D95 (mm)	Grad-ation	Scour Depth (m)	Ac-curacy (m)
141	57	IL	8/12/1993	–	11	Upstream	Single	Square	4.1	11.6	4	2.0	22.4	Insignificant	Noncohesive	0.30	0.60	1.30	4.20	2.1	6.2	0.6
142	57	IL	9/13/1993	–	11	Upstream	Single	Square	4.7	11.6	4	1.8	16.7	Insignificant	Noncohesive	0.30	0.60	1.30	4.20	2.1	6.5	0.6
143	18	IN	11/13/1992	12:30	1	Downstream	Single	Round	0.9	10.2	0	0.3	5.1	Unknown	Noncohesive	0.25	0.50	2.25	8.00	3.0	0.4	0.2
144	18	IN	11/13/1992	10:30	2	Upstream	Single	Round	0.9	10.2	0	0.8	5.9	Unknown	Noncohesive	0.25	0.50	2.25	8.00	3.0	1.0	0.2
145	19	IN	1/3/1991	11:00	8	Upstream	Single	Round	0.9	10.5	5	1.6	9.4	Unknown	Noncohesive	0.24	0.34	0.34	0.55	1.4	0.7	0.2
146	19	IN	1/3/1991	11:45	8	Downstream	Single	Round	0.9	10.5	5	1.6	9.4	Unknown	Noncohesive	0.24	0.34	0.34	0.55	1.4	0.5	0.2
147	20	IN	1/3/1991	12:30	2	Upstream	Single	Round	0.9	14.5	5	1.1	3.4	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	0.4	0.2
148	20	IN	1/4/1991	12:00	2	Upstream	Single	Round	0.9	14.5	5	1.0	3.2	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	0.4	0.2
149	20	IN	1/4/1991	13:00	2	Downstream	Single	Round	0.9	14.5	5	1.0	3.2	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	0.2	0.2
150	20	IN	1/3/1991	12:30	3	Upstream	Single	Round	0.9	13.1	0	1.3	5.1	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	0.7	0.2
151	20	IN	1/3/1991	12:30	4	Upstream	Single	Round	0.6	12.8	10	1.6	6.6	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	1.1	0.2
152	20	IN	1/4/1991	12:00	4	Upstream	Single	Round	0.6	12.8	10	1.9	6.2	Unknown	Noncohesive	0.24	0.90	4.20	7.00	4.2	1.2	0.2
153	21	LA	5/19/1990	14:20	4	Upstream	Single	Sharp	4.3	16.5	0	2.6	11.6	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.7	0.6
154	21	LA	5/19/1990	15:30	4	Downstream	Single	Sharp	4.3	16.5	0	2.6	12.3	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	0.9	0.3
155	21	LA	5/22/1990	13:35	4	Upstream	Single	Sharp	4.3	16.5	0	2.1	9.4	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.5	0.3
156	21	LA	5/22/1990	14:45	4	Downstream	Single	Sharp	4.3	16.5	0	2.1	9.4	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	1.1	0.3
157	21	LA	5/19/1990	14:20	5	Upstream	Single	Sharp	4.3	16.5	0	3.2	11.9	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	7.0	0.6
158	21	LA	5/19/1990	15:30	5	Downstream	Single	Sharp	4.3	16.5	0	3.2	12.6	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	5.2	0.6
159	21	LA	5/22/1990	13:35	5	Upstream	Single	Sharp	4.3	16.5	0	2.9	9.8	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	7.7	0.3
160	21	LA	5/22/1990	14:45	5	Downstream	Single	Sharp	4.3	16.5	0	2.9	9.8	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	5.6	0.3
161	22	LA	5/17/1990	13:30	4	Upstream	Single	Round	4.3	12.2	0	2.5	11.7	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	4.4	0.3
162	22	LA	5/17/1990	15:10	4	Downstream	Single	Round	4.3	12.2	0	2.5	11.7	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.9	0.6
163	22	LA	5/19/1990	10:25	4	Upstream	Single	Round	4.3	12.2	0	2.6	10.8	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.3	0.6
164	22	LA	5/19/1990	12:55	4	Downstream	Single	Round	4.3	12.2	0	2.6	11.3	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	2.1	0.3
165	22	LA	5/22/1990	8:55	4	Downstream	Single	Round	4.3	12.2	0	2.1	9.3	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	4.2	0.3
166	22	LA	5/22/1990	10:30	4	Upstream	Single	Round	4.3	12.2	0	2.1	9.3	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.8	0.3
167	22	LA	5/17/1990	13:30	5	Upstream	Single	Round	4.3	12.2	0	3.0	12.0	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	4.5	0.3
168	22	LA	5/17/1990	15:10	5	Downstream	Single	Round	4.3	12.2	0	3.0	11.7	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	4.8	0.6
169	22	LA	5/19/1990	10:25	5	Upstream	Single	Round	4.3	12.2	0	3.2	11.2	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	5.5	0.3
170	22	LA	5/19/1990	12:55	5	Downstream	Single	Round	4.3	12.2	0	3.2	11.7	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	5.2	0.3
171	22	LA	5/22/1990	8:55	5	Downstream	Single	Round	4.3	12.2	0	2.9	9.6	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	5.6	0.6
172	22	LA	5/22/1990	10:30	5	Upstream	Single	Round	4.3	12.2	0	2.9	9.7	Insignificant	Noncohesive	0.20	0.30	0.40	0.50	1.4	3.7	0.3
173	24	MD	6/23/1972	17:30	1	Upstream	Single	Round	1.2	9.8	0	0.8	3.5	Unknown	Unknown	13.00	22.00	76.00	160.00	2.4	0.4	0.3
174	24	MD	9/25/1975	19:00	1	Upstream	Single	Round	1.2	9.8	0	1.3	3.1	Unknown	Unknown	13.00	22.00	76.00	160.00	2.4	0.4	0.3
175	24	MD	6/23/1972	17:30	2	Upstream	Single	Round	1.2	9.8	0	1.1	2.4	Unknown	Unknown	13.00	22.00	76.00	160.00	2.4	0.7	0.3

Table 24. Pier scour observations, continued.

Measurement	Site	State	Date	Time	Pier	Upstream/ Downstream	Pier Type	Pier Shape	Pier Width (m)	Pier Length (m)	Velocity (m/s)	Depth (m)	Debris Effects	Bed Material	D16 (mm)	D50 (mm)	D84 (mm)	D95 (mm)	Grad-ation	Scour Depth (m)	Ac-curacy (m)
176	24	MD	9/25/1975	19:00	2	Upstream	Single	Round	1.2	9.8	1.6	2.4	Unknown	Uknown	13.00	22.00	76.00	160.00	2.4	0.5	0.3
177	24	MD	5/29/1990	20:30	2	Upstream	Single	Round	1.2	9.8	1.0	1.9	Unknown	Uknown	13.00	22.00	76.00	160.00	2.4	0.3	0.3
178	24	MD	10/23/1990	15:30	2	Upstream	Single	Round	1.2	9.8	1.6	2.0	Unknown	Unknown	13.00	22.00	76.00	160.00	2.4	0.4	0.3
179	24	MD	10/23/1990	20:00	2	Upstream	Single	Round	1.2	9.8	1.6	3.1	Unknown	Unknown	13.00	22.00	76.00	160.00	2.4	0.5	0.3
180	25	MD	2/23/1989	11:00	CNTR	Upstream	Single	Square	1.2	10.7	0.1	1.1	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.7	0.3
181	25	MD	3/25/1989	14:00	CNTR	Upstream	Single	Square	1.2	10.7	0.4	2.2	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.7	0.3
182	25	MD	7/28/1991	10:30	CNTR	Upstream	Single	Square	1.2	10.7	0.2	1.5	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.6	0.3
183	25	MD	2/23/1989	11:00	LEFT	Upstream	Single	Square	1.2	10.7	0.7	1.9	Unknown	Noncohesive	0.18	0.38	0.94	2.60	2.3	1.2	0.3
184	25	MD	3/25/1989	14:00	LEFT	Upstream	Single	Square	1.2	10.7	0.8	3.1	Unknown	Noncohesive	0.18	0.38	0.94	2.60	2.3	1.6	0.3
185	25	MD	7/28/1991	10:30	LEFT	Upstream	Single	Square	1.2	10.7	0.8	2.2	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	1.3	0.3
186	25	MD	2/23/1989	11:00	RT	Upstream	Single	Square	1.2	10.7	0.3	1.1	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.5	0.3
187	25	MD	2/23/1989	14:00	RT	Upstream	Single	Square	1.2	10.7	0.6	2.1	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.7	0.3
188	25	MD	7/28/1991	10:30	RT	Upstream	Single	Square	1.2	10.7	0.3	1.5	Unknown	Unknown	0.18	0.38	0.94	2.60	2.3	0.7	0.3
189	23	MD	7/13/1990	13:00	LEFT	Upstream	Single	Sharp	1.5	12.7	2.3	2.4	Unknown	Unknown	68.00	108.00	233.00	350.00	1.8	0.3	0.3
190	23	MD	4/1/1993	9:30	LEFT	Upstream	Single	Sharp	1.5	12.7	2.1	2.1	Unknown	Unknown	68.00	108.00	233.00	350.00	1.8	0.4	0.3
191	23	MD	7/13/1990	13:00	RT	Upstream	Single	Sharp	1.5	12.7	2.6	3.0	Unknown	Unknown	68.00	108.00	233.00	350.00	1.8	0.8	0.3
192	23	MD	4/1/1993	9:30	RT	Upstream	Single	Sharp	1.5	12.7	1.9	2.4	Unknown	Unknown	68.00	108.00	233.00	350.00	1.8	0.5	0.3
193	58	MN	3/28/1969	14:30	9	Upstream	Single	Square	5.0	9.8	0.7	5.9	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	21.8	0.9	0.0
194	58	MN	4/3/1969	11:57	9	Upstream	Single	Square	4.8	9.8	0.8	6.5	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.9	0.1
195	58	MN	4/9/1969	11:52	9	Upstream	Single	Square	4.5	9.8	1.2	8.5	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.8	0.1
196	58	MN	4/15/1969	12:40	9	Upstream	Single	Square	5.3	9.8	1.6	11.8	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	4.6	0.2
197	58	MN	4/23/1969	11:37	9	Upstream	Single	Square	5.4	9.8	1.4	9.5	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	4.2	0.2
198	58	MN	4/28/1969	12:15	9	Upstream	Single	Square	5.5	9.8	1.1	8.7	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	3.1	0.1
199	58	MN	6/4/1969	13:55	9	Upstream	Single	Square	5.1	9.8	0.5	5.7	Unknown	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.7	0.0
200	58	MN	3/28/1969	14:30	10	Upstream	Single	Square	3.3	9.8	0.7	4.3	Insignificant	Noncohesive	0.20	0.48	6.70	1.10	1.8	0.5	0.0
201	58	MN	4/3/1969	11:57	10	Upstream	Single	Square	3.3	9.8	0.8	4.8	Insignificant	Noncohesive	0.20	0.48	6.70	1.10	1.8	0.4	0.0
202	58	MN	4/9/1969	11:52	10	Upstream	Single	Square	3.3	9.8	1.2	6.7	Insignificant	Noncohesive	0.20	0.48	6.70	1.10	1.8	0.9	0.0
203	58	MN	4/15/1969	12:40	10	Upstream	Single	Square	3.1	9.8	1.6	9.8	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.7	0.0
204	58	MN	4/23/1969	11:37	10	Upstream	Single	Square	3.7	9.8	1.4	9.8	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.8	0.0
205	58	MN	4/28/1969	12:15	10	Upstream	Single	Square	3.7	9.8	1.1	7.9	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.4	0.0
206	58	MN	6/4/1969	13:35	10	Upstream	Single	Square	4.1	9.8	0.5	4.7	Insignificant	Noncohesive	0.20	0.48	0.67	1.10	1.8	0.5	0.0
207	75	MO	7/14/1993	–	8	Upstream	Single	Square	2.8	9.0	0.0	12.6	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	3.7	0.9
208	75	MO	7/17/1993	–	8	Upstream	Single	Square	2.8	9.0	1.9	14.3	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	4.3	0.6
209	75	MO	7/19/1993	–	8	Upstream	Single	Square	2.8	9.0	2.0	15.1	Insignificant	Unknown	0.28	0.70	2.10	4.60	2.7	3.8	0.6
210	75	MO	8/17/1993	–	8	Upstream	Single	Square	2.8	9.0	1.2	12.9	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	3.8	0.6

Table 24. Pier scour observations, continued.

Measurement	Site	State	Date	Time	Pier	Upstream/ Downstream	Pier Type	Pier Shape	Pier Width (m)	Pier Length (m)	Skew (deg)	Velocity (m/s)	Depth (m)	Debris Effects	Bed Material	D16 (mm)	D50 (mm)	D84 (mm)	D95 (mm)	Gradation	Scour Depth (m)	Accuracy (m)
211	75	MO	9/16/1993	–	8	Upstream	Single	Square	2.8	9.0	0	1.1	11.0	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	4.3	0.6
212	75	MO	7/14/1993	–	9	Upstream	Single	Square	2.9	9.0	0	0.0	13.3	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	4.0	0.9
213	75	MO	7/17/1993	–	9	Upstream	Single	Square	2.9	9.0	0	2.3	14.6	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	4.0	0.6
214	75	MO	7/19/1993	–	9	Upstream	Single	Square	2.9	9.0	0	2.0	15.4	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	3.7	0.6
215	75	MO	8/17/1993	–	9	Upstream	Single	Square	2.9	9.0	0	1.4	12.9	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	3.7	0.6
216	75	MO	9/16/1993	–	9	Upstream	Single	Square	2.9	9.0	0	1.2	11.0	Insignificant	Noncohesive	0.28	0.70	2.10	4.60	2.7	3.7	0.6
217	76	MO	7/15/1993	–	10	Upstream	Single	Sharp	5.5	20.7	0	2.6	20.0	Insignificant	Noncohesive	0.55	0.96	2.50	4.03	2.1	4.1	0.6
218	28	MS	1/25/1990	9:00	3	Upstream	Single	Cylindrical	2.4	2.4	0	1.9	3.0	Insignificant	Noncohesive	0.49	7.51	23.20	27.00	6.9	1.2	0.3
219	28	MS	8/27/1992	10:10	3	Downstream	Single	Cylindrical	2.4	2.4	0	1.9	2.6	Substantial	Noncohesive	0.49	7.51	23.20	27.00	6.9	1.0	0.3
220	28	MS	12/21/1972	6:00	4	Upstream	Single	Cylindrical	2.4	2.4	0	2.1	3.9	Unknown	Noncohesive	0.49	7.51	23.20	27.00	6.9	0.9	0.2
221	28	MS	4/25/1973	5:30	4	Upstream	Single	Cylindrical	2.4	2.4	0	1.9	2.7	Unknown	Noncohesive	0.49	7.51	23.20	27.00	6.9	0.9	0.2
222	28	MS	1/25/1990	9:00	4	Upstream	Single	Cylindrical	2.4	2.4	0	2.1	2.9	Insignificant	Noncohesive	0.49	7.51	23.20	27.00	6.9	1.2	0.3
223	28	MS	8/27/1992	11:10	4	Upstream	Single	Cylindrical	2.4	2.4	0	2.3	2.7	Insignificant	Noncohesive	0.49	7.51	23.20	27.00	6.9	2.0	0.3
224	28	MS	1/25/1990	9:00	5	Upstream	Single	Cylindrical	2.4	2.4	0	1.7	3.0	Insignificant	Noncohesive	0.49	7.51	23.20	27.00	6.9	1.4	0.3
225	28	MS	8/27/1992	10:55	5	Upstream	Single	Cylindrical	2.4	2.4	0	2.0	3.1	Insignificant	Noncohesive	0.49	7.51	23.20	27.00	6.9	1.4	0.3
226	26	MS	2/25/1991	14:30	12L	Upstream	Group	Square	0.4	8.0	28	0.8	2.9	Insignificant	Cohesive	–	–	–	–	–	0.6	0.2
227	26	MS	5/1/1991	10:00	12L	Downstream	Group	Square	0.4	8.0	23	0.8	5.1	Insignificant	Cohesive	–	–	–	–	–	0.8	0.2
228	26	MS	2/25/1991	14:30	14L	Upstream	Group	Square	0.4	8.0	18	1.0	7.3	Insignificant	Cohesive	–	–	–	–	–	0.0	0.2
229	26	MS	5/1/1991	10:00	14L	Upstream	Group	Square	0.4	8.0	16	1.3	6.4	Insignificant	Cohesive	–	–	–	–	–	0.0	0.2
230	26	MS	2/25/1991	14:30	15L	Upstream	Group	Square	0.4	8.0	16	1.2	8.9	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.4	0.2
231	26	MS	5/1/1991	10:00	15L	Downstream	Group	Square	0.4	8.0	14	1.3	8.8	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.9	0.2
232	26	MS	2/25/1991	14:30	16L	Upstream	Group	Square	0.8	8.0	16	1.2	8.8	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.4	0.2
233	26	MS	5/1/1991	10:00	16L	Upstream	Group	Square	0.8	8.0	8	1.4	8.2	Moderate	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.4	0.2
234	26	MS	1/31/1990	15:00	17L	Upstream	Group	Cylindrical	1.8	6.2	11	0.9	5.3	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	0.6	0.2
235	26	MS	2/25/1991	14:30	17L	Upstream	Group	Cylindrical	1.6	6.2	16	1.0	6.7	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	1.1	0.2
236	26	MS	5/1/1991	10:00	17L	Upstream	Group	Cylindrical	1.4	6.2	11	1.1	6.5	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	1.2	0.2
237	26	MS	1/31/1990	15:00	18L	Upstream	Group	Cylindrical	1.8	6.2	11	0.4	5.3	Moderate	Noncohesive	0.26	0.39	0.90	1.30	1.9	0.5	0.2
238	26	MS	2/25/1991	14:30	18L	Upstream	Group	Cylindrical	1.6	6.2	16	0.6	6.4	Moderate	Noncohesive	0.26	0.39	0.90	1.30	1.9	0.6	0.2
239	26	MS	5/1/1991	10:00	18L	Downstream	Group	Cylindrical	1.5	6.2	14	0.7	6.8	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	0.8	0.2
240	27	MS	5/1/1991	11:20	15R	Upstream	Group	Square	0.4	8.0	16	1.6	9.3	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.4	0.2
241	27	MS	2/25/1991	15:20	16R	Upstream	Group	Square	0.8	8.0	16	1.2	8.4	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.9	0.2
242	27	MS	5/1/1991	11:20	16R	Downstream	Group	Square	0.8	8.0	11	1.4	8.1	Insignificant	Noncohesive	0.36	0.54	1.20	2.90	1.8	0.6	0.2
243	27	MS	2/25/1991	15:20	17R	Upstream	Group	Cylindrical	1.7	6.2	16	0.9	7.1	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	0.5	0.2
244	27	MS	5/1/1991	11:20	17R	Upstream	Group	Cylindrical	1.5	6.2	8	1.0	6.6	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	1.2	0.2
245	27	MS	2/25/1991	15:20	18R	Upstream	Group	Cylindrical	1.6	6.2	20	0.7	6.2	Insignificant	Noncohesive	0.26	0.39	0.90	1.30	1.9	1.7	0.2

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Page Owner: Office of Research, Development, and Technology, Office of Infrastructure, RDT

Topics: research, infrastructure, hydraulics
Keywords: research, infrastructure, hydraulics, Bridge scour, field data, contraction scour, abutment scour, pier scour, local scour, debri
TRT Terms: Scour at bridges--United States--Mathematical models, Bridges--United States--Foundations and piers, Streambeds, Bridge abutments, Bridge piers, Contraction
Scheduled Update: Archive - No Update needed

This page last modified on 03/08/2016