US Bridges

142nd Street over Mud Creek

Good

Brown County, South Dakota · 3.5W of Ferney · Structure no. 000000007269420

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
411
2022 count
Owner
County
County Highway Agency

About this bridge

142nd Street over Mud Creek is a steel stringer/multi-beam or girder carrying 142nd Street over Mud Creek in Brown County, South Dakota. It was built in 2017, so it is 8 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 411 vehicles a day, roughly 3% of them trucks, projected to reach 411 by 2032. The structure is 80 ft (24.4 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries142nd Street
CrossesMud Creek
Location3.5W of Ferney
RouteCounty Highway 6176
Coordinates45.32766, -98.16901
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length80 ft (24.4 m)
Longest span78 ft (23.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic411 (2022)
Projected traffic411 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 142nd Street over Mud Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is 142nd Street over Mud 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 September 2023.

How much traffic does 142nd Street over Mud Creek carry?

About 411 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 142nd Street over Mud Creek?

The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.7 m) and a deck 33 ft wide.

Who owns 142nd Street over Mud Creek?

It is owned by the County Highway Agency.