US Bridges

M-24 over Bach Creek

Fair

Tuscola County, Michigan · 16 MI S of M-25 · Structure no. 000000000010402

Built
1983
42 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
1,825
2007 count
Owner
State
State Highway Agency

About this bridge

M-24 over Bach Creek is a prestressed concrete box beam or girders - multiple carrying M-24 over Bach Creek in Tuscola County, Michigan. It was built in 1983, so it is 42 years old, younger 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 1,825 vehicles a day, roughly 11% of them trucks, projected to reach 2,004 by 2018. The structure is 35 ft (10.6 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesM-24
CrossesBach Creek
Location16 MI S of M-25
RouteState Highway 138
CountyTuscola County
StateMichigan
Coordinates43.63091, -83.46589
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating36.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length35 ft (10.6 m)
Longest span35 ft (10.6 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,825 (2007)
Projected traffic2,004 by 2018
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-24 over Bach Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is M-24 over Bach 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 August 2024.

How much traffic does M-24 over Bach Creek carry?

About 1,825 vehicles per day (2007 count), of which roughly 11% are trucks.

How long is M-24 over Bach Creek?

The structure is 35 ft (10.6 m) long with a longest span of 35 ft (10.6 m) and a deck 34 ft wide.

Who owns M-24 over Bach Creek?

It is owned by the State Highway Agency.