US Bridges

Irrfb County Hiway over Antelope Creek

Fair

McKenzie County, North Dakota · 4 South 10 East Charlson · Structure no. 000000027165100

Built
1993
32 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
115
2018 count
Owner
County
County Highway Agency

About this bridge

Irrfb County Hiway over Antelope Creek is a prestressed concrete box beam or girders - multiple carrying Irrfb County Hiway over Antelope Creek in McKenzie County, North Dakota. It was built in 1993, so it is 32 years old, younger 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 115 vehicles a day, roughly 25% of them trucks, projected to reach 115 by 2038. The structure is 58 ft (17.7 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIrrfb County Hiway
CrossesAntelope Creek
Location4 South 10 East Charlson
RouteCounty Highway 0
Coordinates47.99703, -102.66579
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length58 ft (17.7 m)
Longest span54 ft (16.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115 (2018)
Projected traffic115 by 2038
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Irrfb County Hiway over Antelope Creek built?

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

What condition is Irrfb County Hiway 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 June 2024.

How much traffic does Irrfb County Hiway over Antelope Creek carry?

About 115 vehicles per day (2018 count), of which roughly 25% are trucks.

How long is Irrfb County Hiway over Antelope Creek?

The structure is 58 ft (17.7 m) long with a longest span of 54 ft (16.5 m) and a deck 30 ft wide.

Who owns Irrfb County Hiway over Antelope Creek?

It is owned by the County Highway Agency.