US Bridges

M-43 over Maple Brook

Fair

Van Buren County, Michigan · In Bangor · Structure no. 000000000010724

Built
1939
86 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
5,877
2007 count
Owner
State
State Highway Agency

About this bridge

M-43 over Maple Brook is a concrete continuous culvert carrying M-43 over Maple Brook in Van Buren County, Michigan. It was built in 1939, so it is 86 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 5,877 vehicles a day, roughly 3% of them trucks, projected to reach 10,260 by 2018. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesM-43
CrossesMaple Brook
LocationIn Bangor
RouteState Highway 43
CountyVan Buren County
StateMichigan
Coordinates42.31546, -86.12212
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 rating79.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,877 (2007)
Projected traffic10,260 by 2018
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-43 over Maple Brook built?

It was built in 1939, making it 86 years old in 2025.

What condition is M-43 over Maple Brook 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 April 2023.

How much traffic does M-43 over Maple Brook carry?

About 5,877 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-43 over Maple Brook?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m).

Who owns M-43 over Maple Brook?

It is owned by the State Highway Agency.