US Bridges

18th Ave Northwest over Chanta Peta Creek

Fair

Adams County, North Dakota · 17 North 2 West Hettinger · Structure no. 000000001116040

Built
1979
46 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
85 ft
2 main spans
Daily traffic
50
2019 count
Owner
County
County Highway Agency

About this bridge

18th Ave Northwest over Chanta Peta Creek is a prestressed concrete tee beam carrying 18th Ave Northwest over Chanta Peta Creek in Adams County, North Dakota. It was built in 1979, so it is 46 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 50 vehicles a day, projected to reach 50 by 2039. The structure is 85 ft (25.9 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries18th Ave Northwest
CrossesChanta Peta Creek
Location17 North 2 West Hettinger
RouteCounty Highway 0
CountyAdams County
StateNorth Dakota
Coordinates46.2478, -102.67452
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.
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.7 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length85 ft (25.9 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2019)
Projected traffic50 by 2039
Trucks—
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 18th Ave Northwest over Chanta Peta Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is 18th Ave Northwest over Chanta Peta 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 September 2023.

How much traffic does 18th Ave Northwest over Chanta Peta Creek carry?

About 50 vehicles per day (2019 count).

How long is 18th Ave Northwest over Chanta Peta Creek?

The structure is 85 ft (25.9 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns 18th Ave Northwest over Chanta Peta Creek?

It is owned by the County Highway Agency.