Road Stream Crossing Site TBW_TBAP220
Thunder Bay River Watershed, Thunder Bay River
Salina Road
Long Rapids Twp,
Alpena County
Information collected by:
Site Location
GPS Coordinates: 45.08267
, -83.75751
T31N
R6E
Sec 18
Fish Passability 0
Total Erosion: 0.314 tons/year
Severity: Severe
Year Inventoried: 2017
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Rock
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
33 ft. |
30 ft. |
12 ft. |
Concrete |
2 |
33 ft. |
30 ft. |
12 ft. |
Concrete |
3 |
33 ft. |
30 ft. |
12 ft. |
Concrete |
Structure Interior: smooth
Dimensions of Structure: Length 30 ft.
, Width 106 ft.
, Height 12 ft.
Structure Inlet
Water Depth: 5.6 ft.
Water Velocity*: 2.1 ft./sec.
Structure Outlet
Water Depth: 5.6 ft.
Water Velocity*: 3.2 ft./sec.
*Water Velocities were measured 1 ft. below Surface
(with Meter)
Additional Comments
SPAN SEGMENTED INTO 3 SECTIONS
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 4.2 ft.
Bankfull Width: 75 ft.
Wetted Width: 70 ft.
Water Velocity: 2.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Sand
County Road
Road Condition: Fair
Road Width at Culvert: 30 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 100 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.38
Erosion: 0.314 tons/year
Erosion Information
Total Erosion at Crossing: 0.314 tons/year
Extent of Erosion: Minor
Erosion is occurring and corrective actions can be installed to address the problem.
Summary Information
Fish Passability 0
These non-native species were observerd at this site: Spotted Knapweed