US Bridges

Mcalpin Road over Kemp I/C Drain

FairPosted for load

Huron County, Michigan · Sec 21-28 Sebewaing Twp · Structure no. 000000000003648

Built
1925
100 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
315
2009 count
Owner
County
County Highway Agency

About this bridge

Mcalpin Road over Kemp I/C Drain is a steel stringer/multi-beam or girder carrying Mcalpin Road over Kemp I/C Drain in Huron County, Michigan. It was built in 1925, so it is 100 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 315 vehicles a day, roughly 3% of them trucks, projected to reach 570 by 2029. The structure is 23 ft (7 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesMcalpin Road
CrossesKemp I/C Drain
LocationSec 21-28 Sebewaing Twp
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.69734, -83.4257
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 statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span21 ft (6.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic315 (2009)
Projected traffic570 by 2029
Trucks3%
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 Mcalpin Road over Kemp I/C Drain built?

It was built in 1925, making it 100 years old in 2025.

What condition is Mcalpin Road over Kemp 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 September 2023.

How much traffic does Mcalpin Road over Kemp I/C Drain carry?

About 315 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Mcalpin Road over Kemp I/C Drain?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.5 m) and a deck 24 ft wide.

Who owns Mcalpin Road over Kemp I/C Drain?

It is owned by the County Highway Agency.