US Bridges

Nd Highway 66 over North Branch Park River

Fair

Cavalier County, North Dakota · 8 West Nd 32 · Structure no. 0066094125

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
390
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 66 over North Branch Park River is a concrete culvert carrying Nd Highway 66 over North Branch Park River in Cavalier County, North Dakota. It was built in 1963, so it is 62 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 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 390 vehicles a day, roughly 21% of them trucks, projected to reach 390 by 2039. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesNd Highway 66
CrossesNorth Branch Park River
Location8 West Nd 32
RouteState Highway 66
CountyCavalier County
StateNorth Dakota
Coordinates48.63023, -98.03122
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating99.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2019)
Projected traffic390 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 66 over North Branch Park River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Nd Highway 66 over North Branch Park River 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 May 2023.

How much traffic does Nd Highway 66 over North Branch Park River carry?

About 390 vehicles per day (2019 count), of which roughly 21% are trucks.

How long is Nd Highway 66 over North Branch Park River?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns Nd Highway 66 over North Branch Park River?

It is owned by the State Highway Agency.