US Bridges

9th Ave. NE over Duck Creek

Fair

Adams County, North Dakota · 8 North 3 East Hettinger · Structure no. 000000001122120

Built
1970
55 years old, rebuilt 1986
Condition
Fair
inspected September 2023
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

9th Ave. NE over Duck Creek is a concrete channel beam carrying 9th Ave. NE over Duck Creek in Adams County, North Dakota. It was built in 1970 and reconstructed in 1986, so it is 55 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 5 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 20 vehicles a day, projected to reach 3 by 2039. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries9th Ave. NE
CrossesDuck Creek
Location8 North 3 East Hettinger
RouteCounty Highway 0
CountyAdams County
StateNorth Dakota
Coordinates46.11886, -102.55883
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating56.5 US tons
Inventory rating34 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span27 ft (8.2 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic3 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 9th Ave. NE over Duck Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1986.

What condition is 9th Ave. NE over Duck 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 9th Ave. NE over Duck Creek carry?

About 20 vehicles per day (2019 count).

How long is 9th Ave. NE over Duck Creek?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.

Who owns 9th Ave. NE over Duck Creek?

It is owned by the County Highway Agency.