US Bridges

IRR BIA RTE 146 over West Branch Wolf River

Fair

Menominee County, Wisconsin · In Neopit · Structure no. 00000000000F917

Built
1981
44 years old, rebuilt 1987
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
450
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 146 over West Branch Wolf River is a prestressed concrete box beam or girders - multiple carrying IRR BIA RTE 146 over West Branch Wolf River in Menominee County, Wisconsin. It was built in 1981 and reconstructed in 1987, so it is 44 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 450 vehicles a day, roughly 50% of them trucks, projected to reach 526 by 2044. The structure is 42 ft (12.8 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIRR BIA RTE 146
CrossesWest Branch Wolf River
LocationIn Neopit
RouteFederal Lands Road 4
Coordinates44.98114, -88.82914
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating37 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width25 ft (7.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2024)
Projected traffic526 by 2044
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$708,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 146 over West Branch Wolf River built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1987.

What condition is IRR BIA RTE 146 over West Branch Wolf 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 IRR BIA RTE 146 over West Branch Wolf River carry?

About 450 vehicles per day (2024 count), of which roughly 50% are trucks.

How long is IRR BIA RTE 146 over West Branch Wolf River?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 25 ft wide.

Who owns IRR BIA RTE 146 over West Branch Wolf River?

It is owned by the Bureau of Indian Affairs.