US Bridges

M-115 over Dutchman Creek

Fair

Manistee County, Michigan · 2.7 MI SE of Benzie Col · Structure no. 000000000006445

Built
1937
88 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
2,670
2009 count
Owner
State
State Highway Agency

About this bridge

M-115 over Dutchman Creek is a concrete tee beam carrying M-115 over Dutchman Creek in Manistee County, Michigan. It was built in 1937, so it is 88 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 2,670 vehicles a day, roughly 6% of them trucks, projected to reach 3,100 by 2029. The structure is 27 ft (8.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-115
CrossesDutchman Creek
Location2.7 MI SE of Benzie Col
RouteState Highway 115
CountyManistee County
StateMichigan
Coordinates44.48889, -85.93478
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 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 rating82.1 US tons
Inventory rating49.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,670 (2009)
Projected traffic3,100 by 2029
Trucks6%
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$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was M-115 over Dutchman Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is M-115 over Dutchman 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 October 2023.

How much traffic does M-115 over Dutchman Creek carry?

About 2,670 vehicles per day (2009 count), of which roughly 6% are trucks.

How long is M-115 over Dutchman Creek?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 40 ft wide.

Who owns M-115 over Dutchman Creek?

It is owned by the State Highway Agency.