US Bridges

M-25 over Ocha Creek

Fair

Huron County, Michigan · 5.3 MI N of M-142 · Structure no. 000000000003494

Built
1953
72 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
1,091
2007 count
Owner
State
State Highway Agency

About this bridge

M-25 over Ocha Creek is a concrete tee beam carrying M-25 over Ocha Creek in Huron County, Michigan. It was built in 1953, so it is 72 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 1,091 vehicles a day, roughly 9% of them trucks, projected to reach 1,234 by 2018. The structure is 40 ft (12.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-25
CrossesOcha Creek
Location5.3 MI N of M-142
RouteState Highway 25
CountyHuron County
StateMichigan
Coordinates43.91586, -82.6951
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,091 (2007)
Projected traffic1,234 by 2018
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$24,000
NavigationNo navigation control on waterway

Frequently asked questions

When was M-25 over Ocha Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is M-25 over Ocha 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 June 2023.

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

About 1,091 vehicles per day (2007 count), of which roughly 9% are trucks.

How long is M-25 over Ocha Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns M-25 over Ocha Creek?

It is owned by the State Highway Agency.