US Bridges

138th Street over Snake Creek

Good

Brown County, South Dakota · 10.3W & 4N of Warner · Structure no. 000000007007380

Built
1993
32 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
76 ft
3 main spans
Daily traffic
98
2022 count
Owner
County
County Highway Agency

About this bridge

138th Street over Snake Creek is a concrete continuous slab carrying 138th Street over Snake Creek in Brown County, South Dakota. It was built in 1993, so it is 32 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 98 vehicles a day, roughly 2% of them trucks, projected to reach 98 by 2032. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Carries138th Street
CrossesSnake Creek
Location10.3W & 4N of Warner
RouteCounty Highway 0
Coordinates45.38853, -98.70718
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length76 ft (23.2 m)
Longest span29 ft (8.7 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2022)
Projected traffic98 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 138th Street over Snake Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is 138th Street over Snake Creek 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 July 2024.

How much traffic does 138th Street over Snake Creek carry?

About 98 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 138th Street over Snake Creek?

The structure is 76 ft (23.2 m) long with a longest span of 29 ft (8.7 m) and a deck 31 ft wide.

Who owns 138th Street over Snake Creek?

It is owned by the County Highway Agency.