US Bridges

M-25 over Carmody Creek

Fair

Sanilac County, Michigan · 3.1 MI N of M-46 · Structure no. 000000000009489

Built
1942
83 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
2,969
2007 count
Owner
State
State Highway Agency

About this bridge

M-25 over Carmody Creek is a concrete culvert carrying M-25 over Carmody Creek in Sanilac County, Michigan. It was built in 1942, so it is 83 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.

It carries about 2,969 vehicles a day, roughly 4% of them trucks, projected to reach 4,387 by 2018. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-25
CrossesCarmody Creek
Location3.1 MI N of M-46
RouteState Highway 25
CountySanilac County
StateMichigan
Coordinates43.47374, -82.5579
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,969 (2007)
Projected traffic4,387 by 2018
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-25 over Carmody Creek built?

It was built in 1942, making it 83 years old in 2025.

What condition is M-25 over Carmody Creek 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 May 2024.

How much traffic does M-25 over Carmody Creek carry?

About 2,969 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is M-25 over Carmody Creek?

The structure is 25 ft (7.6 m) long with a longest span of 13 ft (3.9 m).

Who owns M-25 over Carmody Creek?

It is owned by the State Highway Agency.