US Bridges

273rd Street over Nine Mile Creek

Good

Lincoln County, South Dakota · 3.3E of Harrisburg · Structure no. 000000042148050

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
78 ft
6 main spans
Daily traffic
1,032
2022 count
Owner
County
County Highway Agency

About this bridge

273rd Street over Nine Mile Creek is a concrete continuous culvert carrying 273rd Street over Nine Mile Creek in Lincoln County, South Dakota. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,032 vehicles a day, roughly 3% of them trucks, projected to reach 1,032 by 2032. The structure is 78 ft (23.8 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries273rd Street
CrossesNine Mile Creek
Location3.3E of Harrisburg
RouteCounty Highway 0
Coordinates43.43137, -96.63342
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.7 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHL 93
Structure length78 ft (23.8 m)
Longest span12 ft (3.8 m)
Deck width30 ft (9.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,032 (2022)
Projected traffic1,032 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 273rd Street over Nine Mile Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is 273rd Street over Nine Mile 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 October 2023.

How much traffic does 273rd Street over Nine Mile Creek carry?

About 1,032 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 273rd Street over Nine Mile Creek?

The structure is 78 ft (23.8 m) long with a longest span of 12 ft (3.8 m) and a deck 30 ft wide.

Who owns 273rd Street over Nine Mile Creek?

It is owned by the County Highway Agency.