US Bridges

US-2 over S Br Iron River

Good

Iron County, Michigan · 3.8 MI NW of M-73 · Structure no. 000000000004167

Built
1934
91 years old, rebuilt 1976
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
1,300
2019 count
Owner
State
State Highway Agency

About this bridge

US-2 over S Br Iron River is a steel stringer/multi-beam or girder carrying US-2 over S Br Iron River in Iron County, Michigan. It was built in 1934 and reconstructed in 1976, so it is 91 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,300 vehicles a day, roughly 13% of them trucks, projected to reach 1,450 by 2039. The structure is 27 ft (8.2 m) long and 42 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesUS-2
CrossesS Br Iron River
Location3.8 MI NW of M-73
RouteU.S. Route 2
Coordinates46.12674, -88.73109
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating91.4 US tons
Inventory rating54.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.7 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2019)
Projected traffic1,450 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-2 over S Br Iron River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1976.

What condition is US-2 over S Br Iron River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does US-2 over S Br Iron River carry?

About 1,300 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is US-2 over S Br Iron River?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.7 m) and a deck 42 ft wide.

Who owns US-2 over S Br Iron River?

It is owned by the State Highway Agency.