US Bridges

Nd Highway 1806 over Tobacco Garden Creek

Fair

McKenzie County, North Dakota · 22 North Nd 23 · Structure no. 1806288840

Built
1981
44 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
98 ft
3 main spans
Daily traffic
80
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 1806 over Tobacco Garden Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 1806 over Tobacco Garden Creek in McKenzie County, North Dakota. It was built in 1981, so it is 44 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 80 vehicles a day, roughly 25% of them trucks, projected to reach 105 by 2039. The structure is 98 ft (29.9 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNd Highway 1806
CrossesTobacco Garden Creek
Location22 North Nd 23
RouteState Highway 1806
Coordinates48.08187, -103.1278
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating56.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length98 ft (29.9 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2019)
Projected traffic105 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nd Highway 1806 over Tobacco Garden Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nd Highway 1806 over Tobacco Garden 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 November 2023.

How much traffic does Nd Highway 1806 over Tobacco Garden Creek carry?

About 80 vehicles per day (2019 count), of which roughly 25% are trucks.

How long is Nd Highway 1806 over Tobacco Garden Creek?

The structure is 98 ft (29.9 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns Nd Highway 1806 over Tobacco Garden Creek?

It is owned by the State Highway Agency.