US Bridges

Kilmanagh Road over Shebeon Drain

Fair

Huron County, Michigan · Sec. 31 Winsor Twp. · Structure no. 000000000003673

Built
1993
32 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
425
2009 count
Owner
County
County Highway Agency

About this bridge

Kilmanagh Road over Shebeon Drain is a prestressed concrete tee beam carrying Kilmanagh Road over Shebeon Drain in Huron County, Michigan. It was built in 1993, so it is 32 years old, younger 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 6 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 425 vehicles a day, projected to reach 770 by 2029. The structure is 50 ft (15.2 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKilmanagh Road
CrossesShebeon Drain
LocationSec. 31 Winsor Twp.
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.75622, -83.35385
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.8 US tons
Inventory rating48.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span47 ft (14.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2009)
Projected traffic770 by 2029
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Kilmanagh Road over Shebeon Drain built?

It was built in 1993, making it 32 years old in 2025.

What condition is Kilmanagh Road over Shebeon 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 September 2023.

How much traffic does Kilmanagh Road over Shebeon Drain carry?

About 425 vehicles per day (2009 count).

How long is Kilmanagh Road over Shebeon Drain?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.4 m) and a deck 33 ft wide.

Who owns Kilmanagh Road over Shebeon Drain?

It is owned by the County Highway Agency.