US Bridges

Buffalo Gap Road over Cheyenne Rv

Fair

Fall River County, South Dakota · 1N & 1W Oral · Structure no. 000000024387040

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
286 ft
3 main spans
Daily traffic
128
2022 count
Owner
County
County Highway Agency

About this bridge

Buffalo Gap Road over Cheyenne Rv is a steel continuous stringer/multi-beam or girder carrying Buffalo Gap Road over Cheyenne Rv in Fall River County, South Dakota. It was built in 1964, so it is 61 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 128 vehicles a day, roughly 3% of them trucks, projected to reach 128 by 2032. The structure is 286 ft (87.2 m) long and 26 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesBuffalo Gap Road
CrossesCheyenne Rv
Location1N & 1W Oral
RouteCounty Highway 0
CountyFall River County
StateSouth Dakota
Coordinates43.41857, -103.28827
Functional classRural Major 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length286 ft (87.2 m)
Longest span110 ft (33.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2022)
Projected traffic128 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
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 Buffalo Gap Road over Cheyenne Rv built?

It was built in 1964, making it 61 years old in 2025.

What condition is Buffalo Gap Road over Cheyenne Rv 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 May 2024.

How much traffic does Buffalo Gap Road over Cheyenne Rv carry?

About 128 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Buffalo Gap Road over Cheyenne Rv?

The structure is 286 ft (87.2 m) long with a longest span of 110 ft (33.5 m) and a deck 26 ft wide.

Who owns Buffalo Gap Road over Cheyenne Rv?

It is owned by the County Highway Agency.