Road Stream Crossing Site MAN_KA_022

Big Manistee River Watershed, North Branch Manistee River
Mecum Rd
Oliver Twp, Kalkaska County
Information collected by:
Site Location
GPS Coordinates: 44.6409 , -85.02693
T26N R6W Sec 15
Owned by State
Structure is NOT Perched
Total Erosion: 0.0926 tons/year
Severity: Restored
Year Inventoried: 2014
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: Wood
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 34.3 ft. , Width 60 ft. , Height 6.3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.1 ft./sec.
Structure Outlet
Water Depth: 3.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.1 ft./sec.
*Water Velocities were measured 2 ft. below Surface (with Meter)
Additional Comments

CRA Timber Bridge

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: 50 ft.
Water Velocity: 1 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 28 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: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0463 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0463 tons/year
Erosion Information
Total Erosion at Crossing: 0.0926 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.

No, nice CRA timber bridge!