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Publication Number: FHWA-HRT-05-072
Date: July 2006

Assessing Stream Channel Stability At Bridges in Physiographic Regions

 

APPENDIX A, continued.

Figure 101. Unnamed creek (N 28), Interior Low Plateau-upstream from bridge. Photo. This is unnamed creek N 28 in the Interior Low Plateau region looking upstream from the bridge. Bank vegetation is a narrow row of dense shrubs on both banks.

Figure 102. Unnamed creek (N 28), Interior Low Plateau-downstream from bridge. Photo. This is looking downstream from the bridge. All vegetation has been removed and replaced by grass. Channel banks are uneven from erosion.

Figure 101. Unnamed creek (N 28), Interior Low Plateau-upstream from bridge.

Figure 102. Unnamed creek (N 28), Interior Low Plateau-downstream from bridge.

Figure 103. Unnamed creek (N 28), Interior Low Plateau-downstream under bridge. Photo. This is looking downstream under the bridge.

Figure 104. Unnamed creek (N 28), Interior Low Plateau-rocky bank material. Photo. This is looking at the right bank on the upstream side of the bridge. The photo shows rocky bank material.

Figure 103. Unnamed creek (N 28), Interior Low Plateau-downstream under bridge.

Figure 104. Unnamed creek (N 28), Interior Low Plateau-
rocky bank material.

Figure 105. South Fork, Interior Low Plateau-downstream from bridge. Photo. This is South Fork in the Interior Low Plateau region looking downstream from the bridge. Bank vegetation consists of dense shrubs and trees on both banks.

Figure 106. South Fork, Interior Low Plateau-upstream from bridge. Photo. This is looking upstream from the bridge. Vegetation is limited to a narrow band along each bank.

Figure 105. South Fork, Interior Low Plateau-
downstream from bridge.

Figure 106. South Fork, Interior Low Plateau-
upstream from bridge.

Figure 107. South Fork, Interior Low Plateau-looking upstream at bridge. Photo. This is looking upstream at the bridge.

Figure 108. South Fork, Interior Low Plateau-looking downstream at bridge. Photo. This is looking downstream at the bridge. The stream is fairly stable and well-aligned with the bridge.

Figure 107. South Fork, Interior Low Plateau-
looking upstream at bridge.

Figure 108. South Fork, Interior Low Plateau-
looking downstream at bridge.

Figure 109. Little Skin Creek, Ozark-Ouachita Highlands-downstream from bridge. Photo. This is Little Skin Creek in the Ozark-Ouachita Highlands region looking downstream from the bridge. The channel narrows considerably downstream, and much of the vegetation on the left bank has been removed.

Figure 110. Little Skin Creek, Ozark-Ouachita Highlands-upstream from bridge. Photo. This is looking upstream from the bridge. Vegetation is fairly thick, but many small trees are leaning into the stream.

Figure 109. Little Skin Creek, Ozark-Ouachita Highlands-downstream from bridge.

Figure 110. Little Skin Creek, Ozark-Ouachita Highlands-upstream from bridge.

Figure 111. Little Skin Creek, Ozark-Ouachita Highlands-looking downstream at       bridge (left). Photo. This is looking downstream at the bridge toward the left bank.

Figure 112. Little Skin Creek, Ozark-Ouachita Highlands-looking downstream at       bridge (right). Photo. This is looking downstream at the bridge toward the right bank.

Figure 111. Little Skin Creek, Ozark-Ouachita Highlands-looking downstream at bridge (left).

Figure 112. Little Skin Creek, Ozark-Ouachita Highlands-looking downstream at bridge (right).

Figure 113. Unnamed creek (N 21), Ozark-Ouachita Highlands-downstream from bridge. Photo. This is unnamed creek N 21 in the Ozark-Ouachita Highlands region looking downstream from the bridge. Much of the vegetation on the banks has been removed.

Figure 114. Unnamed creek (N 21), Ozark-Ouachita Highlands-upstream from bridge. Photo. This is looking upstream from the bridge. Vegetation is fairly thick, but the channel has an irregular width.

Figure 113. Unnamed creek (N 21), Ozark-Ouachita Highlands-downstream from bridge.

Figure 114. Unnamed creek (N 21), Ozark-Ouachita Highlands-upstream from bridge.

Figure 115. Unnamed creek (N 21), Ozark-Ouachita Highlands-looking downstream at bridge. Photo. This is looking downstream at the bridge. The highly irregular width is very evident.

Figure 116. Unnamed creek (N 21), Ozark-Ouachita Highlands-looking upstream at bridge. Photo. This is looking upstream at the bridge.

Figure 115. Unnamed creek (N 21), Ozark-Ouachita Highlands-looking downstream at bridge.

Figure 116. Unnamed creek (N 21), Ozark-Ouachita Highlands-looking upstream at bridge.

Figure 117. Little Cypress Creek, Atlantic Coastal Plain-downstream from bridge. Photo. This is Little Cypress Creek in the Atlantic Coastal Plain region looking downstream from the bridge. The channel is narrow, deep, and slightly entrenched.

Figure 118. Little Cypress Creek, Atlantic Coastal Plain-upstream from bridge. Photo. This is looking upstream from the bridge. The channel is narrow and deep, and bank vegetation is primarily moderately dense trees and annuals.

Figure 117. Little Cypress Creek, Atlantic Coastal Plain-downstream from bridge.

Figure 118. Little Cypress Creek, Atlantic Coastal Plain-upstream from bridge.

Figure 119. Little Cypress Creek, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. The channel is not well-aligned with the bridge.

Figure 120. Little Cypress Creek, Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge. The photo shows a large bar devoid of vegetation that is deposited in the center span of a bridge that has three spans.

Figure 119. Little Cypress Creek, Atlantic Coastal Plain-
looking downstream at bridge.

Figure 120. Little Cypress Creek, Atlantic Coastal Plain-
looking upstream at bridge.

Figure 121. Unnamed creek (N 23), Atlantic Coastal Plain-downstream from bridge. Photo. This is unnamed creek N 19 in the Atlantic Coastal Plain region looking downstream from the bridge. The channel is narrow, deep, and entrenched.

Figure 122. Unnamed creek (N 23), Atlantic Coastal Plain-upstream from bridge. Photo. This is looking upstream from the bridge. The channel is narrow and deep, and bank vegetation is primarily moderately dense trees and annuals. There appears to be sediment deposited in the channel; this is associated with bank widening.

Figure 121. Unnamed creek (N 23), Atlantic Coastal Plain-downstream from bridge.

Figure 122. Unnamed creek (N 23), Atlantic Coastal Plain-upstream from bridge.

Figure 123. Unnamed creek (N 23), Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. There is a concrete pad under the bridge and minimal bank stabilization riprap.

Figure 124. Unnamed creek (N 23), Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge. There is a drop at the end of the pad of several feet that is now being filled in with sediment.

Figure 123. Unnamed creek (N 23), Atlantic Coastal Plain-looking downstream at bridge.

Figure 124. Unnamed creek (N 23), Atlantic Coastal Plain-looking upstream at bridge.

Figure 125. Unnamed creek (N 24), Atlantic Coastal Plain-upstream from bridge. Photo. This is unnamed creek N 24 in the Atlantic Coastal Plain region looking upstream from the bridge. The channel appears to have been straightened and a levee built on the left bank. There is one row of trees on the right bank.

Figure 126. Unnamed creek (N 24), Atlantic Coastal Plain-downstream from bridge. Photo. This is looking downstream from the bridge. The channel is overwidened, and sediment is being deposited in bars along the channel bottom.

Figure 125. Unnamed creek (N 24), Atlantic Coastal Plain-upstream from bridge.

Figure 126. Unnamed creek (N 24), Atlantic Coastal Plain-downstream from bridge.

Figure 127. Unnamed creek (N 24), Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge and at sediment deposition in the channel. The photo shows several trees leaning into the channel.

Figure 128. Unnamed creek (N 24), Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. The channel is slightly narrower than it is further downstream, and no sediment deposition is apparent.

Figure 127. Unnamed creek (N 24), Atlantic Coastal Plain-looking upstream at bridge.

Figure 128. Unnamed creek (N 24), Atlantic Coastal Plain-looking downstream at bridge.

Figure 129. Peace River, Atlantic Coastal Plain-upstream from bridge at old pedestrian bridge. Photo. This is the Peace River in the Atlantic Coastal Plain region looking upstream from the bridge toward a pedestrian bridge upstream. The left bank is heavily vegetated with trees, and the right bank is sparsely vegetated.

Figure 130. Peace River, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream toward the auto bridge. The channel is well-aligned with the bridge, and the flow is very calm.

Figure 129. Peace River, Atlantic Coastal Plain-
upstream from bridge at old pedestrian bridge.

Figure 130. Peace River, Atlantic Coastal Plain-
looking downstream at bridge.

Figure 131. Peace River, Atlantic Coastal Plain-downstream under bridge, right bank. Photo. This is looking downstream under the bridge along the right bank. The bank material is primarily sand.

Figure 132. Peace River, Atlantic Coastal Plain-upstream from old pedestrian bridge. Photo. This is looking further upstream from the pedestrian bridge. Banks are heavily vegetated but very sandy.

Figure 131. Peace River, Atlantic Coastal Plain-
downstream under bridge, right bank.

Figure 132. Peace River, Atlantic Coastal Plain-
upstream from old pedestrian bridge.

Figure 133. Alligator Creek, Atlantic Coastal Plain-<br /> downstream from bridge.

Figure 134. Alligator Creek, Atlantic Coastal Plain-downstream from bridge. Photo. This is the Alligator Creek in the Atlantic Coastal Plain region looking downstream from the bridge. The left bank has only grass and is rigidly stabilized with a stone wall. The right bank is very heavily vegetated with trees.

Figure 133. Alligator Creek, Atlantic Coastal Plain-
downstream from bridge.

Figure 134. Alligator Creek, Atlantic Coastal Plain-
looking downstream at bridge.

Figure 135. Alligator Creek, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream toward the bridge. The channel is well-aligned with the bridge, and the flow is very calm. The left bank is grassed and stabilized with a stone wall. The right bank is lined with trees.

Figure 136. Alligator Creek, Atlantic Coastal Plain-upstream from bridge. Photo. This is looking further upstream from the bridge at the very heavily vegetated left bank.

Figure 135. Alligator Creek, Atlantic Coastal Plain-
looking upstream at bridge.

Figure 136. Alligator Creek, Atlantic Coastal Plain-
upstream from bridge.

Figure 137. Stocketts Run, Atlantic Coastal Plain-upstream from bridge. Photo. This is the Stocketts Run in the Atlantic Coastal Plain region looking upstream from the bridge. Banks are moderately vegetated by trees. The channel is fairly straight with alternate sand bars.

Figure 138. Stocketts Run, Atlantic Coastal Plain-downstream from bridge. Photo. This is looking downstream from the bridge toward a meander bend curving to the left. Both banks are vegetated with trees.

Figure 137. Stocketts Run, Atlantic Coastal Plain-
upstream from bridge.

Figure 138. Stocketts Run, Atlantic Coastal Plain-
downstream from bridge.

Figure 139. Stocketts Run, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. The channel is well-aligned with the bridge.

Figure 140. Stocketts Run, Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge. It is well-aligned, and banks are stable.

Figure 139. Stocketts Run, Atlantic Coastal Plain-
looking downstream at bridge.

Figure 140. Stocketts Run, Atlantic Coastal Plain-
looking upstream at bridge.

Figure 141. Mill Stream Branch, Atlantic Coastal Plain-upstream from bridge. Photo. This is the Mill Stream Branch in the Atlantic Coastal Plain region looking upstream from the bridge. Banks are well-vegetated by trees, except just upstream from the bridge where the right bank is grass. The channel has been straightened.

Figure 142. Mill Stream Branch, Atlantic Coastal Plain-downstream from bridge. Photo. This is looking downstream from the bridge. The left bank is well-vegetated with trees; the right bank is covered with grass.

Figure 141. Mill Stream Branch, Atlantic Coastal Plain-upstream from bridge

Figure 142. Mill Stream Branch, Atlantic Coastal Plain-downstream from bridge.

Figure 143. Mill Stream Branch, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. The channel is well-aligned with the bridge.

Figure 144. Mill Stream Branch, Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge. It is overwidened, and sediment has deposited downstream of the bridge.

Figure 143. Mill Stream Branch, Atlantic Coastal Plain- looking downstream at bridge.

Figure 144. Mill Stream Branch, Atlantic Coastal Plain- looking upstream at bridge.

Figure 145. Kent County Tributary, Atlantic Coastal Plain-downstream from bridge. Photo. This is the Kent County Tributary in the Atlantic Coastal Plain region looking downstream from the bridge. Most woody vegetation has been removed for 91.5 meters downstream and replaced by grass. The bank lines are ragged due to mass wasting.

Figure 146. Kent County Tributary, Atlantic Coastal Plain-upstream from bridge. Photo. This is looking upstream from the bridge. The banks have sparse trees and grass. There is evidence of continuing mass wasting.

Figure 145. Kent County Tributary, Atlantic Coastal Plain-downstream from bridge.

Figure 146. Kent County Tributary, Atlantic Coastal Plain-upstream from bridge.

Figure 147. Kent County Tributary, Atlantic Coastal Plain-looking downstream at bridge. Photo. This is looking downstream at the bridge. The channel is not well-aligned with the bridge, as there is a tight bend in the channel just upstream. The banks are high.

Figure 148. Kent County Tributary, Atlantic Coastal Plain-looking upstream at bridge. Photo. This is looking upstream at the bridge. The channel is deep due to degradation, and the banks are not stable.

Figure 147. Kent County Tributary, Atlantic Coastal Plain-looking downstream at bridge.

Figure 148. Kent County Tributary, Atlantic Coastal Plain-looking upstream at bridge.

Figure 149. Morgan Creek, Atlantic Coastal Plain-upstream from bridge. Photo. This is Morgan Creek in the Atlantic Coastal Plain region looking upstream from the bridge. The right bank is lined with trees, the left bank is covered with tall grasses. The left bank appears to have hoof damage.

Figure 150. Morgan Creek, Atlantic Coastal Plain-downstream from bridge. Photo. This is looking downstream from the bridge. The banks have sparse trees and grass. The bank width is irregular, and there appears to be continuing fluvial erosion and some mass wasting.

Figure 149. Morgan Creek, Atlantic Coastal Plain-
upstream from bridge.

Figure 150. Morgan Creek, Atlantic Coastal Plain-
downstream from bridge.

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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). The hydraulics and hydrology research program at the TFHRC Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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