US Bridges

Caro Road over Kemp Drain

PoorPosted for load

Huron County, Michigan · Sec. 28-29 Sebewaing Twp. · Structure no. 000000000003652

Built
1931
94 years old, rebuilt 1979
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
100
2009 count
Owner
County
County Highway Agency

About this bridge

Caro Road over Kemp Drain is a steel stringer/multi-beam or girder carrying Caro Road over Kemp Drain in Huron County, Michigan. It was built in 1931 and reconstructed in 1979, so it is 94 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 1% of them trucks, projected to reach 180 by 2029. The structure is 30 ft (9.1 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCaro Road
CrossesKemp Drain
LocationSec. 28-29 Sebewaing Twp.
RouteCounty Highway 0
Coordinates43.68492, -83.4343
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.5 US tons
Inventory rating13.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width27 ft (8.3 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2009)
Projected traffic180 by 2029
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Caro Road over Kemp Drain built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1979.

What condition is Caro Road over Kemp Drain in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Caro Road over Kemp Drain carry?

About 100 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Caro Road over Kemp Drain?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 27 ft wide.

Who owns Caro Road over Kemp Drain?

It is owned by the County Highway Agency.