Road Stream Crossing Site P175
Pine River Watershed, Pine River
W 50 Rd
South Branch Twp,
Wexford County
Information collected by:
Site Location
GPS Coordinates: 44.17919
, -85.7605
T21N
R12W
Sec 28
Owned by Federal
Structure is NOT Perched
Total Erosion: 0.3808 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Other
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 35 ft.
, Width 112 ft.
, Height 18 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
Structure Outlet
Water Depth: 5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
*Water Velocities were measured 0.7 ft. below Surface
(with Meter)
Additional Comments
Dobson Bridge Access Site.
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: 3 ft.
Bankfull Width: 60 ft.
Wetted Width: 54 ft.
Water Velocity: 3 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 32 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: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.1164 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2645 tons/year
Erosion Information
Total Erosion at Crossing: 0.3808 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.