US Bridges

IRR BIA RTE 21 over Red River

Fair

Menominee County, Wisconsin · 13 KM NE of Bowler · Structure no. 00000000000F311

Built
1979
46 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
133 ft
2 main spans
Daily traffic
150
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 21 over Red River is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE 21 over Red River in Menominee County, Wisconsin. It was built in 1979, so it is 46 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 150 vehicles a day, roughly 20% of them trucks, projected to reach 250 by 2044. The structure is 133 ft (40.5 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesIRR BIA RTE 21
CrossesRed River
Location13 KM NE of Bowler
RouteFederal Lands Road 21
Coordinates44.94333, -88.92833
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.7 US tons
Inventory rating25.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length133 ft (40.5 m)
Longest span67 ft (20.4 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic250 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 21 over Red River built?

It was built in 1979, making it 46 years old in 2025.

What condition is IRR BIA RTE 21 over Red 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 21 over Red River carry?

About 150 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is IRR BIA RTE 21 over Red River?

The structure is 133 ft (40.5 m) long with a longest span of 67 ft (20.4 m) and a deck 34 ft wide.

Who owns IRR BIA RTE 21 over Red River?

It is owned by the Bureau of Indian Affairs.