Road Stream Crossing Site PLT-I-18

Platte River Watershed, Stanley Creek
North Carmean Rd
Inland Twp, Benzie County
Information collected by:
GPS Coordinates: 44.66241 , -85.91909
T26 R13 Sec 8
Adjacent Land Owned by Private
Severity: Moderate
Cost: $166,750,000.00
Site Location
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Road Width at Culvert: 25 ft.
Road Surface: Gravel
Maintenance: seasonal
Low Point: At Stream
Existing Drainage Control? no
Any Failings? no
Type of Crossing: culvert(s) (single culvert)
Is this crossing constricted? no
Are there adjacent wetlands? yes
Left Approach
Length: 100 ft.
Slope: 0%
Vegetation: partial
Right Approach
Length: 200 ft.
Slope: 0%
Vegetation: partial
Culvert Information
Length: 55 ft.
Diameter: 4.5 ft.
Material: galvanized
Condition :fair
Flow: clear
Fill Depth: 6.5 ft.
Embankment Slope: 1:1
Fill Depth: 6.5 ft.
Embankment Slope: vertical
Stream Information
Stream Width: 8.5 ft.
Stream Depth: 1 in.
Stream Current: moderate
Stream Substrate: sand,gravel
Stream Width: 11 ft.
Stream Depth: 1.5 in.
Stream Current: fast
Stream Substrate: sand,gravel
Erosion Information
Is there Streambank erosion beside the crossing? no
Is there embankment erosion? no
Is there erosion at the culvert outlet? no
Is there erosion at the shoulder and/or ditch? no
Is there pooling at the outlet? yes
Is there sand over the crossing? no
Extent of Erosion: minor
Cause of Erosion: Stream Constriction
Recommended Treatments
Action Recommended? no
Add pavement? yes
Pave Left Approach: 0 Lineal Feet
Pave Right Approach: 0 Lineal Feet
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)? yes
Extend culvert(s)? no
Lineal feet to extend: 0
Comments: the stream is constricted resulted in increased velocities through the culvert and scouring
Total Points:0
This page last updated on 2/9/2022.