US Bridges

46th ST SW over Antelope Creek

Fair

Stark County, North Dakota · 8 East 9 South Richardton · Structure no. 000000045152180

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
40
2016 count
Owner
County
County Highway Agency

About this bridge

46th ST SW over Antelope Creek is a concrete culvert carrying 46th ST SW over Antelope Creek in Stark County, North Dakota. It was built in 1971, so it is 54 years old, older than the North Dakota average of 48.2 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 40 vehicles a day, projected to reach 40 by 2036. The structure is 36 ft (11 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Carries46th ST SW
CrossesAntelope Creek
Location8 East 9 South Richardton
RouteCounty Highway 4520
Coordinates46.74667, -102.14758
Functional classRural Major Collector

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating22.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length36 ft (11 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 traffic40 (2016)
Projected traffic40 by 2036
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 46th ST SW over Antelope Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is 46th ST SW over Antelope Creek 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 August 2024.

How much traffic does 46th ST SW over Antelope Creek carry?

About 40 vehicles per day (2016 count).

How long is 46th ST SW over Antelope Creek?

The structure is 36 ft (11 m) long with a longest span of 10 ft (3 m).

Who owns 46th ST SW over Antelope Creek?

It is owned by the County Highway Agency.