Road Stream Crossing Site BT_B034

Betsie River Watershed, Betsie River
Haze Rd
Weldon Twp, Benzie County
Information collected by:
GPS Coordinates: 44.52507 , -85.9588
T25N R14W Sec 35
Owned by Private
State
Severity: Severe
Year Inventoried: 2014
Site Location
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Erosion
Erosion
Erosion
Erosion
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 54 ft. , Width 19 ft. , Height 6 ft.
Structure Inlet
Water Depth: 5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5 ft./sec.
Structure Outlet
Water Depth: 5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5 ft./sec.
*Water Velocities were measured 3 ft. below Surface (with Meter)
Additional Comments

Site of a former bridge crossing that washed out in the spring of 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: 70 ft.
Wetted Width: 60 ft.
Water Velocity: 5.6 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 19 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
Erosion Information
Extent of Erosion: Moderate
Notes:

Large amounts of sediment entering the river.

Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Downstream Embankment
30 ft.
35 ft.
5 ft.
yes
Gravelly Loam
1.05
Right Downstream Embankment
16 ft.
13 ft.
8 ft.
no
Gravelly Loam
0.896
Summary Information
Erosion is an area of concern for this site.

Revisit if there are plans to replace the bridge also to monitor erosion.

A future visit to this site is recommended.

If a new bridge is to be built or possibly create a recreational access site on the East side where there is state land.