Road Stream Crossing Site S819

Boardman River Watershed, Robbin's Creek

Private Drive

Garfield Twp, Grand Traverse County

GPS Coordinates: 44.69899 , -85.63918

T27N R11W Sec 33

Road Width at Culvert: 13 ft.

Road Surface: Paved

Maintenance: year around

Low Point: At Stream

Existing Drainage Control? no

Any Failings? yes

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

Is this crossing constricted? no

Are there adjacent wetlands? yes

Slope: >10%

Vegetation: partial

Slope: >10%

Vegetation: partial

Shape: arc pipe

Length: 40 ft.

Diameter: 7.5 ft wide, 4.5 ft tall ft.

Material: galvanized

Condition :good

Flow: clear

Fill Depth: 6 ft.

Embankment Slope: 1:1 slope

Fill Depth: 7 ft.

Embankment Slope: 1:1 slope

Stream Width: 6 ft.

Stream Depth: 6 in.

Stream Current: moderate

Stream Substrate: sand,gravel

Stream Width: 6 ft.

Stream Depth: 3 in.

Stream Current: moderate

Stream Substrate: sand

Is there Streambank erosion beside the crossing? yes

Is there embankment erosion? yes

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

 

Extent of Erosion: minor

Cause of Erosion: diversion outlet flows, highwater

Action Recommended? yes

Add pavement? no

Add paved raised edge? no

Increase fill? no

Replace culvert(s)? no

Extend culvert(s)? no

Other Treatments: Rock riprap at inlet

Comments: Paved diversion outlet is cracking apart.

Some constriction during high water, not a major concern.

A portion of culvert ceiling is caving in. If it does collapse in the future, this site will be a real problem. Not a point of serious conc