US Bridges

Nd Highway 20 over Cypress Creek

Fair

Cavalier County, North Dakota · 2 South Canadian Border · Structure no. 0020168931

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
60
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 20 over Cypress Creek is a prestressed concrete box beam or girders - single or spread carrying Nd Highway 20 over Cypress Creek in Cavalier County, North Dakota. It was built in 1974, so it is 51 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 60 vehicles a day, roughly 33% of them trucks, projected to reach 60 by 2039. The structure is 65 ft (19.8 m) long and 41 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

Location

Open in Google Maps
CarriesNd Highway 20
CrossesCypress Creek
Location2 South Canadian Border
RouteState Highway 20
CountyCavalier County
StateNorth Dakota
Coordinates48.97716, -98.93497
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating49.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span62 ft (18.9 m)
Deck width41 ft (12.4 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2019)
Projected traffic60 by 2039
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 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 20 over Cypress Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Nd Highway 20 over Cypress 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 Nd Highway 20 over Cypress Creek carry?

About 60 vehicles per day (2019 count), of which roughly 33% are trucks.

How long is Nd Highway 20 over Cypress Creek?

The structure is 65 ft (19.8 m) long with a longest span of 62 ft (18.9 m) and a deck 41 ft wide.

Who owns Nd Highway 20 over Cypress Creek?

It is owned by the State Highway Agency.