US Bridges

IRR BIA RTE 4 over Highbank Creek Bridge

Good

Corson County, South Dakota · 8.93KM SW of Little Eagle · Structure no. 00000000000A149

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
109
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 4 over Highbank Creek Bridge is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE 4 over Highbank Creek Bridge in Corson County, South Dakota. It was built in 2008, so it is 17 years old, younger than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 109 vehicles a day, roughly 10% of them trucks, projected to reach 153 by 2043. The structure is 96 ft (29.2 m) long and 36 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesIRR BIA RTE 4
CrossesHighbank Creek Bridge
Location8.93KM SW of Little Eagle
RouteFederal Lands Road 4
Coordinates45.62899, -100.90451
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.5 US tons
Inventory rating41.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length96 ft (29.2 m)
Longest span94 ft (28.6 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic109 (2023)
Projected traffic153 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 4 over Highbank Creek Bridge built?

It was built in 2008, making it 17 years old in 2025.

What condition is IRR BIA RTE 4 over Highbank Creek Bridge in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does IRR BIA RTE 4 over Highbank Creek Bridge carry?

About 109 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 4 over Highbank Creek Bridge?

The structure is 96 ft (29.2 m) long with a longest span of 94 ft (28.6 m) and a deck 36 ft wide.

Who owns IRR BIA RTE 4 over Highbank Creek Bridge?

It is owned by the Bureau of Indian Affairs.