US Bridges

US-2|ADAMS ST over Iron River

Fair

Iron County, Michigan · 400 Ft No of S Genesee · Structure no. 000000000004217

Built
1997
28 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
7,655
2007 count
Owner
State
State Highway Agency

About this bridge

US-2|ADAMS ST over Iron River is a prestressed concrete box beam or girders - multiple carrying US-2|ADAMS ST over Iron River in Iron County, Michigan. It was built in 1997, so it is 28 years old, younger 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 7,655 vehicles a day, roughly 4% of them trucks, projected to reach 7,865 by 2018. The structure is 100 ft (30.5 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-2|ADAMS ST
CrossesIron River
Location400 Ft No of S Genesee
RouteU.S. Route 2
Coordinates46.09238, -88.63588
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length100 ft (30.5 m)
Longest span99 ft (30.1 m)
Deck width69 ft (20.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,655 (2007)
Projected traffic7,865 by 2018
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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|ADAMS ST over Iron River built?

It was built in 1997, making it 28 years old in 2025.

What condition is US-2|ADAMS ST over Iron 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 September 2024.

How much traffic does US-2|ADAMS ST over Iron River carry?

About 7,655 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is US-2|ADAMS ST over Iron River?

The structure is 100 ft (30.5 m) long with a longest span of 99 ft (30.1 m) and a deck 69 ft wide.

Who owns US-2|ADAMS ST over Iron River?

It is owned by the State Highway Agency.