Road Stream Crossing Site B-070

Betsie River Watershed, Betsie River

Grace Rd

Benzonia Twp, Benzie County

GPS Coordinates: 44.60442012 , -86.11239865

T26N R15W Sec 34

Road Width at Culvert: 22 ft.

Road Surface: Paved

Maintenance: year around

Low Point: beyond right approach

Existing Drainage Control? no

Any Failings? no

Type of Crossing: culvert(s) (triple culvert)

Is this crossing constricted? no

Are there adjacent wetlands? yes

Comments: Excessive sand bedload in stream.

Length: 530 ft.

Slope: 1-5%

Vegetation: heavy

Length: 0 ft.

Slope: 0%

Vegetation: heavy

Length: 50 ft.

Diameter: 132 ft.

Material: galvanized

Condition :fair

Flow: clear

Fill Depth: 15 ft.

Embankment Slope: 1:1

Fill Depth: 12 ft.

Embankment Slope: 1.5:1

Stream Width: 50 ft.

Stream Depth: 2 in.

Stream Current: moderate

Stream Substrate: sand

Stream Width: 60 ft.

Stream Depth: 2 in.

Stream Current: slow

Stream Substrate: sand

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? no

Is there sand over the crossing? no

Other Conditions: Cemented rock riprap starting to break up.

 

Extent of Erosion: minor

Action Recommended? yes

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: 0

Extend culvert(s)? no

Lineal feet to extend: 0

Other Treatments: Bridge is preferred for future reference.