US Bridges

IRR BIA RTE 41 over White River

Fair

County 102, South Dakota · 19.3 KM NW of Oglala · Structure no. 00000000000A103

Built
1976
49 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
169 ft
3 main spans
Daily traffic
624
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 41 over White River is a steel continuous stringer/multi-beam or girder carrying IRR BIA RTE 41 over White River in County 102, South Dakota. It was built in 1976, so it is 49 years old, older than the South Dakota average of 48.9 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 624 vehicles a day, roughly 7% of them trucks, projected to reach 730 by 2043. The structure is 169 ft (51.5 m) long and 35 ft wide. If it were closed, the detour would be 82 mi (132 km).

CarriesIRR BIA RTE 41
CrossesWhite River
Location19.3 KM NW of Oglala
RouteFederal Lands Road 41
Coordinates43.31346, -102.78866
Functional classRural Minor Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.5 US tons
Inventory rating41.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length169 ft (51.5 m)
Longest span78 ft (23.8 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic624 (2023)
Projected traffic730 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed82 mi (132 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 41 over White River built?

It was built in 1976, making it 49 years old in 2025.

What condition is IRR BIA RTE 41 over White 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 July 2023.

How much traffic does IRR BIA RTE 41 over White River carry?

About 624 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is IRR BIA RTE 41 over White River?

The structure is 169 ft (51.5 m) long with a longest span of 78 ft (23.8 m) and a deck 35 ft wide.

Who owns IRR BIA RTE 41 over White River?

It is owned by the Bureau of Indian Affairs.