US Bridges

IRR BIA RTE 2 over Red Water Creek

Poor

Dewey County, South Dakota · 8.5 KM E of Sd HWY 63 · Structure no. 00000000000A002

Built
1961
64 years old
Condition
Poor
inspected May 2023
Type
Channel Beam
Concrete
Length
70 ft
3 main spans
Daily traffic
180
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 2 over Red Water Creek is a concrete channel beam carrying IRR BIA RTE 2 over Red Water Creek in Dewey County, South Dakota. It was built in 1961, so it is 64 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 180 vehicles a day, roughly 3% of them trucks, projected to reach 211 by 2043. The structure is 70 ft (21.3 m) long and 26 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

CarriesIRR BIA RTE 2
CrossesRed Water Creek
Location8.5 KM E of Sd HWY 63
RouteFederal Lands Road 2
Coordinates45.18081, -101.11267
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.8 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length70 ft (21.3 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2023)
Projected traffic211 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 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$1.1 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 2 over Red Water Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is IRR BIA RTE 2 over Red Water Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does IRR BIA RTE 2 over Red Water Creek carry?

About 180 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is IRR BIA RTE 2 over Red Water Creek?

The structure is 70 ft (21.3 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns IRR BIA RTE 2 over Red Water Creek?

It is owned by the Bureau of Indian Affairs.