US Bridges

US-41 over East Branch Eagle River

Fair

Keweenaw County, Michigan · 0.7 MI NE of M-26 · Structure no. 000000000005256

Built
1932
93 years old, rebuilt 1999
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
1,399
2007 count
Owner
State
State Highway Agency

About this bridge

US-41 over East Branch Eagle River is a prestressed concrete box beam or girders - multiple carrying US-41 over East Branch Eagle River in Keweenaw County, Michigan. It was built in 1932 and reconstructed in 1999, so it is 93 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 1,399 vehicles a day, roughly 7% of them trucks, projected to reach 1,253 by 2018. The structure is 31 ft (9.4 m) long and 49 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesUS-41
CrossesEast Branch Eagle River
Location0.7 MI NE of M-26
RouteU.S. Route 41
Coordinates47.39254, -88.265
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.6 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length31 ft (9.4 m)
Longest span30 ft (9 m)
Deck width49 ft (14.8 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,399 (2007)
Projected traffic1,253 by 2018
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 US-41 over East Branch Eagle River built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1999.

What condition is US-41 over East Branch Eagle 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 East Branch Eagle River carry?

About 1,399 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is US-41 over East Branch Eagle River?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9 m) and a deck 49 ft wide.

Who owns US-41 over East Branch Eagle River?

It is owned by the State Highway Agency.