US Bridges

US-41 over Little Carp River

Fair

Baraga County, Michigan · 2.0 MI N of Assinins · Structure no. 000000000000488

Built
1937
88 years old
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
24 ft
1 main span
Daily traffic
3,883
2007 count
Owner
State
State Highway Agency

About this bridge

US-41 over Little Carp River is a concrete arch - deck carrying US-41 over Little Carp River in Baraga 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 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 3,883 vehicles a day, roughly 10% of them trucks, projected to reach 5,063 by 2018. The structure is 24 ft (7.3 m) long and 93 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

CarriesUS-41
CrossesLittle Carp River
Location2.0 MI N of Assinins
RouteU.S. Route 41
Coordinates46.83549, -88.48349
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width93 ft (28.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,883 (2007)
Projected traffic5,063 by 2018
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemYes

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$23,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US-41 over Little Carp River built?

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

What condition is US-41 over Little Carp 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 August 2024.

How much traffic does US-41 over Little Carp River carry?

About 3,883 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is US-41 over Little Carp River?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 93 ft wide.

Who owns US-41 over Little Carp River?

It is owned by the State Highway Agency.