US Bridges

M-115 over S Br Tobacco River

Fair

Clare County, Michigan · 1.9 MI W of Clare · Structure no. 000000000001684

Built
1935
90 years old, rebuilt 1989
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
7,472
2007 count
Owner
State
State Highway Agency

About this bridge

M-115 over S Br Tobacco River is a steel stringer/multi-beam or girder carrying M-115 over S Br Tobacco River in Clare County, Michigan. It was built in 1935 and reconstructed in 1989, so it is 90 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 7,472 vehicles a day, roughly 3% of them trucks, projected to reach 10,808 by 2018. The structure is 51 ft (15.5 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-115
CrossesS Br Tobacco River
Location1.9 MI W of Clare
RouteState Highway 115
CountyClare County
StateMichigan
Coordinates43.82714, -84.80599
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.8 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length51 ft (15.5 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,472 (2007)
Projected traffic10,808 by 2018
Trucks3%
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-115 over S Br Tobacco River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1989.

What condition is M-115 over S Br Tobacco River 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 2024.

How much traffic does M-115 over S Br Tobacco River carry?

About 7,472 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-115 over S Br Tobacco River?

The structure is 51 ft (15.5 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns M-115 over S Br Tobacco River?

It is owned by the State Highway Agency.