US Bridges

25th Ave over Otter Creek

Good

Morton County, North Dakota · 2 West 1 South of Harmon · Structure no. 000000030153041

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

25th Ave over Otter Creek is a concrete culvert carrying 25th Ave over Otter Creek in Morton County, North Dakota. It was built in 2024, so it is 1 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 good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 20% of them trucks, projected to reach 55 by 2043. The structure is 33 ft (10 m) long. If it were closed, the detour would be 5 mi (8 km).

Carries25th Ave
CrossesOtter Creek
Location2 West 1 South of Harmon
RouteCounty Highway 0
Coordinates46.93074, -101.00071
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating69.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length33 ft (10 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic55 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 25th Ave over Otter Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is 25th Ave over Otter 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 November 2024.

How much traffic does 25th Ave over Otter Creek carry?

About 50 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is 25th Ave over Otter Creek?

The structure is 33 ft (10 m) long with a longest span of 16 ft (4.9 m).

Who owns 25th Ave over Otter Creek?

It is owned by the County Highway Agency.