Road Stream Crossing Site B-021

Betsie River Watershed, Little Betsie River
Thompsonville Rd
Colfax Twp, Benzie County
Information collected by:
GPS Coordinates: 44.53171759 , -85.93856331
T25N R13W Sec 30
Adjacent Land Owned by Private
Severity: Moderate
Cost: $100,000.00
Site Location
 
Inlet
Outlet
Road Approach - Left
Road Approach - Right
Crossing Information
Road Width at Culvert: 26 ft.
Road Surface: Paved
Maintenance: year around
Low Point: 200 ft. on right approach
Existing Drainage Control? yes
Any Failings? no
Type of Crossing: culvert(s) (twin culvert)
Is this crossing constricted? no
Are there adjacent wetlands? yes
Approaches
Left Approach
Length: 250 ft.
Slope: 1-5%
Vegetation: partial
Right Approach
Length: 0 ft.
Slope: 0%
Vegetation: partial
Culvert Information
Length: 80 ft.
Diameter: 34, 62 ft.
Material: galvanized
Condition :fair
Flow: obstructed
Embankments
Upstream
Fill Depth: 4 ft.
Embankment Slope: 2:1
Downstream
Fill Depth: 4 ft.
Embankment Slope: 2:1
Stream Information
Upstream
Stream Width: 15 ft.
Stream Depth: 4 in.
Stream Current: moderate
Stream Substrate: sand
Downstream
Stream Width: 15 ft.
Stream Depth: 4 in.
Stream Current: fast
Stream Substrate: sand
Erosion Information
Conditions
Is there Streambank erosion beside the crossing? yes
Is there embankment erosion? no
Is there erosion at the culvert outlet? no
Is there erosion at the shoulder and/or ditch? yes
Is there pooling at the outlet? yes
Is there sand over the crossing? no
 
Extent of Erosion: moderate
Cause of Erosion: Culverts too small, recreational pressures.
Recommended Treatments
Action Recommended? no
Add pavement? no
Add paved raised edge? no
Number of erosion control structures: 0
Number of sediment basins: 0
Number of diversion outlets: 0
Increase fill? no
Replace culvert(s)? no
Dimensions of replacement: 2
Extend culvert(s)? no
Lineal feet to extend: 0
 
Severity:Moderate
This page last updated on 10/16/2014.