US Bridges

County Highway over Irrigation Ditch

Fair

Williams County, North Dakota · 16 W. 11 S. of Williston · Structure no. 000000053103450

Built
1936
89 years old, rebuilt 1995
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
31 ft
1 main span
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Irrigation Ditch is a wood or timber stringer/multi-beam or girder carrying County Highway over Irrigation Ditch in Williams County, North Dakota. It was built in 1936 and reconstructed in 1995, so it is 89 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 20 by 2039. The structure is 31 ft (9.4 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesIrrigation Ditch
Location16 W. 11 S. of Williston
RouteCounty Highway 0
CountyWilliams County
StateNorth Dakota
Coordinates47.98308, -104.00167
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating52.5 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width18 ft (5.5 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic20 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$90,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Irrigation Ditch built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1995.

What condition is County Highway over Irrigation Ditch 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 July 2023.

How much traffic does County Highway over Irrigation Ditch carry?

About 20 vehicles per day (2019 count).

How long is County Highway over Irrigation Ditch?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 18 ft wide.

Who owns County Highway over Irrigation Ditch?

It is owned by the County Highway Agency.