US Bridges

101st Street over Creek

Poor

Roberts County, South Dakota · 0.7W of White Rock · Structure no. 000000055303010

Built
1929
96 years old
Condition
Poor
inspected June 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
144
2022 count
Owner
County
County Highway Agency

About this bridge

101st Street over Creek is a concrete continuous culvert carrying 101st Street over Creek in Roberts County, South Dakota. It was built in 1929, so it is 96 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 4 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 144 vehicles a day, roughly 3% of them trucks, projected to reach 144 by 2032. The structure is 21 ft (6.3 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries101st Street
CrossesCreek
Location0.7W of White Rock
RouteCounty Highway 0
Coordinates45.92079, -96.5924
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic144 (2022)
Projected traffic144 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$676,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 101st Street over Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is 101st Street over 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 June 2024.

How much traffic does 101st Street over Creek carry?

About 144 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 101st Street over Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.

Who owns 101st Street over Creek?

It is owned by the County Highway Agency.