US Bridges

114th Street over Spain Ditch

Fair

Marshall County, South Dakota · 0.4S & 2.1E of Amherst · Structure no. 000000046051140

Built
1934
91 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
103
2022 count
Owner
County
County Highway Agency

About this bridge

114th Street over Spain Ditch is a concrete continuous culvert carrying 114th Street over Spain Ditch in Marshall County, South Dakota. It was built in 1934, so it is 91 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 103 vehicles a day, roughly 3% of them trucks, projected to reach 103 by 2032. The structure is 21 ft (6.4 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries114th Street
CrossesSpain Ditch
Location0.4S & 2.1E of Amherst
RouteCounty Highway 6452
Coordinates45.73336, -97.87549
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 (6.4 m)
Longest span10 ft (3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103 (2022)
Projected traffic103 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 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 114th Street over Spain Ditch built?

It was built in 1934, making it 91 years old in 2025.

What condition is 114th Street over Spain Ditch 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 June 2023.

How much traffic does 114th Street over Spain Ditch carry?

About 103 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 114th Street over Spain Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns 114th Street over Spain Ditch?

It is owned by the County Highway Agency.