US Bridges

SD037 over North Br Twelve Mile Ck

Fair

Davison County, South Dakota · 2.3 N JCT Sd 42 · Structure no. 000000018160187

Built
1946
79 years old, rebuilt 1962
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
3,776
2024 count
Owner
State
State Highway Agency

About this bridge

SD037 over North Br Twelve Mile Ck is a concrete continuous culvert carrying SD037 over North Br Twelve Mile Ck in Davison County, South Dakota. It was built in 1946 and reconstructed in 1962, so it is 79 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 3,776 vehicles a day, roughly 13% of them trucks, projected to reach 5,162 by 2044. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 42.3 mi (68 km).

CarriesSD037
CrossesNorth Br Twelve Mile Ck
Location2.3 N JCT Sd 42
RouteState Highway 37
Coordinates43.57733, -98.00596
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,776 (2024)
Projected traffic5,162 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SD037 over North Br Twelve Mile Ck built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1962.

What condition is SD037 over North Br Twelve Mile Ck 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 October 2024.

How much traffic does SD037 over North Br Twelve Mile Ck carry?

About 3,776 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SD037 over North Br Twelve Mile Ck?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).

Who owns SD037 over North Br Twelve Mile Ck?

It is owned by the State Highway Agency.