US Bridges

Shephard Road over Setter I/C Drain

Fair

Sanilac County, Michigan · Sec 14-15 Flynn Twp · Structure no. 000000000009544

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
26 ft
1 main span
Daily traffic
835
2016 count
Owner
County
County Highway Agency

About this bridge

Shephard Road over Setter I/C Drain is a steel culvert carrying Shephard Road over Setter I/C Drain in Sanilac County, Michigan. It was built in 1970, so it is 55 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 835 vehicles a day, roughly 10% of them trucks, projected to reach 1,510 by 2036. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesShephard Road
CrossesSetter I/C Drain
LocationSec 14-15 Flynn Twp
RouteCounty Highway 7433
Coordinates43.29029, -82.92374
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating19.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length26 ft (7.8 m)
Longest span26 ft (7.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic835 (2016)
Projected traffic1,510 by 2036
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Shephard Road over Setter I/C Drain built?

It was built in 1970, making it 55 years old in 2025.

What condition is Shephard Road over Setter I/C Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Shephard Road over Setter I/C Drain carry?

About 835 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Shephard Road over Setter I/C Drain?

The structure is 26 ft (7.8 m) long with a longest span of 26 ft (7.8 m).

Who owns Shephard Road over Setter I/C Drain?

It is owned by the County Highway Agency.