US Bridges

US018 over Trib Turkey Ridge Ck

Good

Turner County, South Dakota · 3.1 W JCT Sd 19 · Structure no. 000000063129180

Built
2018
7 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
915
2023 count
Owner
State
State Highway Agency

About this bridge

US018 over Trib Turkey Ridge Ck is a concrete continuous culvert carrying US018 over Trib Turkey Ridge Ck in Turner County, South Dakota. It was built in 2018, so it is 7 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 915 vehicles a day, roughly 16% of them trucks, projected to reach 985 by 2043. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 39.8 mi (64 km).

CarriesUS018
CrossesTrib Turkey Ridge Ck
Location3.1 W JCT Sd 19
RouteU.S. Route 18
Coordinates43.23701, -97.14203
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
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 traffic915 (2023)
Projected traffic985 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 US018 over Trib Turkey Ridge Ck built?

It was built in 2018, making it 7 years old in 2025.

What condition is US018 over Trib Turkey Ridge Ck 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 December 2022.

How much traffic does US018 over Trib Turkey Ridge Ck carry?

About 915 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US018 over Trib Turkey Ridge Ck?

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

Who owns US018 over Trib Turkey Ridge Ck?

It is owned by the State Highway Agency.