US Bridges

IRR BIA RTE 11 over Cherry Creek

Good

Ziebach County, South Dakota · 1 KM West of Cherry Creek · Structure no. 00000000000A014

Built
1968
57 years old, rebuilt 2005
Condition
Good
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
157 ft
3 main spans
Daily traffic
250
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 11 over Cherry Creek is a prestressed concrete tee beam carrying IRR BIA RTE 11 over Cherry Creek in Ziebach County, South Dakota. It was built in 1968 and reconstructed in 2005, so it is 57 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 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 365 by 2043. The structure is 157 ft (47.9 m) long and 31 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesIRR BIA RTE 11
CrossesCherry Creek
Location1 KM West of Cherry Creek
RouteFederal Lands Road 11
Coordinates44.60297, -101.50942
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.9 US tons
Inventory rating40.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length157 ft (47.9 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic365 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 11 over Cherry Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2005.

What condition is IRR BIA RTE 11 over Cherry Creek 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 11 over Cherry Creek carry?

About 250 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 11 over Cherry Creek?

The structure is 157 ft (47.9 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns IRR BIA RTE 11 over Cherry Creek?

It is owned by the Bureau of Indian Affairs.