US Bridges

Mcalpin Road over Appin I/C Drain

Fair

Huron County, Michigan · Sec 19-30 Sheridan Twp · Structure no. 000000000003660

Built
1945
80 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
150
2009 count
Owner
County
County Highway Agency

About this bridge

Mcalpin Road over Appin I/C Drain is a steel stringer/multi-beam or girder carrying Mcalpin Road over Appin I/C Drain in Huron County, Michigan. It was built in 1945, so it is 80 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 150 vehicles a day, roughly 1% of them trucks, projected to reach 270 by 2029. The structure is 38 ft (11.5 m) long and 26 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesMcalpin Road
CrossesAppin I/C Drain
LocationSec 19-30 Sheridan Twp
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.70468, -83.11211
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length38 ft (11.5 m)
Longest span36 ft (10.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2009)
Projected traffic270 by 2029
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Appin I/C Drain built?

It was built in 1945, making it 80 years old in 2025.

What condition is Mcalpin Road over Appin 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 Appin I/C Drain carry?

About 150 vehicles per day (2009 count), of which roughly 1% are trucks.

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

The structure is 38 ft (11.5 m) long with a longest span of 36 ft (10.9 m) and a deck 26 ft wide.

Who owns Mcalpin Road over Appin I/C Drain?

It is owned by the County Highway Agency.