US Bridges

Baseline Road over Tributary to Rapid Creek

Good

Pennington County, South Dakota · 7S 5.2E New Underwoo · Structure no. 000000052664360

Built
2016
9 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

Baseline Road over Tributary to Rapid Creek is a concrete culvert carrying Baseline Road over Tributary to Rapid Creek in Pennington County, South Dakota. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24 vehicles a day, roughly 3% of them trucks, projected to reach 24 by 2032. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 16.2 mi (26 km).

CarriesBaseline Road
CrossesTributary to Rapid Creek
Location7S 5.2E New Underwoo
RouteCounty Highway 0
Coordinates43.99465, -102.72997
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating28.9 US tons
Inventory rating22.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic24 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Baseline Road over Tributary to Rapid Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Baseline Road over Tributary to Rapid 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 June 2023.

How much traffic does Baseline Road over Tributary to Rapid Creek carry?

About 24 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Baseline Road over Tributary to Rapid Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Baseline Road over Tributary to Rapid Creek?

It is owned by the County Highway Agency.