US Bridges

41030 309th Street over Emanuel Creek

Fair

Bon Homme County, South Dakota · 3.7N&4.7W of Springfield · Structure no. 000000005093181

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
167 ft
3 main spans
Daily traffic
163
2022 count
Owner
County
County Highway Agency

About this bridge

41030 309th Street over Emanuel Creek is a steel continuous stringer/multi-beam or girder carrying 41030 309th Street over Emanuel Creek in Bon Homme County, South Dakota. It was built in 1962, so it is 63 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 163 vehicles a day, roughly 3% of them trucks, projected to reach 163 by 2032. The structure is 167 ft (50.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries41030 309th Street
CrossesEmanuel Creek
Location3.7N&4.7W of Springfield
RouteCounty Highway 0
Coordinates42.9076, -97.9813
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.1 US tons
Inventory rating27.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length167 ft (50.9 m)
Longest span64 ft (19.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic163 (2022)
Projected traffic163 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 41030 309th Street over Emanuel Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is 41030 309th Street over Emanuel Creek 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 2023.

How much traffic does 41030 309th Street over Emanuel Creek carry?

About 163 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 41030 309th Street over Emanuel Creek?

The structure is 167 ft (50.9 m) long with a longest span of 64 ft (19.5 m) and a deck 26 ft wide.

Who owns 41030 309th Street over Emanuel Creek?

It is owned by the County Highway Agency.