Road Stream Crossing Site BL-29
Maple River Watershed, West Branch Maple River
Ely Bridge Rd
Center Twp,
Emmet County
Information collected by:
Site Location
GPS Coordinates: 45.57638
, -84.85288
T37N
R5W
Sec 25
Owned by Private
State
State
Structure is NOT Perched
Total Erosion: 0.5432 tons/year
Severity: Restored
Year Inventoried: 2015
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: Wingwall 30-70 Degree
Outlet Type: Other
Structure Material: Wood
Structure Substrate: Sand
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 28 ft.
, Width 60 ft.
, Height 7.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured 1.5 ft. below Surface
(with Meter)
Additional Comments
CRA assisted with installation summer 2014.
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 2 ft.
Bankfull Width: 50 ft.
Wetted Width: 40 ft.
Water Velocity: 0.3 ft./sec.
(Measured with Meter)
Dominant Substrate: Silt
Road Information
Paved
County Road
(Seasonal)
Road Condition: Good
Road Width at Culvert: 26 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 400 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.48
Erosion: 0.165 tons/year
Right Approach
Length: 800 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.55
Erosion: 0.3782 tons/year
Erosion Information
Total Erosion at Crossing: 0.5432 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.
No.