US Bridges

Nd Highway 66 over I-29/DRAYTON Interchange

Fair

Pembina County, North Dakota · Junction Nd 66 · Structure no. 0029186881

Built
1959
66 years old, rebuilt 1986
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
244 ft
4 main spans
Daily traffic
1,830
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 66 over I-29/DRAYTON Interchange is a prestressed concrete continuous stringer/multi-beam or girder carrying Nd Highway 66 over I-29/DRAYTON Interchange in Pembina County, North Dakota. It was built in 1959 and reconstructed in 1986, so it is 66 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 1,830 vehicles a day, roughly 10% of them trucks, projected to reach 1,830 by 2039. The structure is 244 ft (74.4 m) long and 43 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesNd Highway 66
CrossesI-29/DRAYTON Interchange
LocationJunction Nd 66
RouteState Highway 66
CountyPembina County
StateNorth Dakota
Coordinates48.57126, -97.18668
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89 US tons
Inventory rating53.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length244 ft (74.4 m)
Longest span58 ft (17.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,830 (2019)
Projected traffic1,830 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed8.1 mi (13 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nd Highway 66 over I-29/DRAYTON Interchange built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1986.

What condition is Nd Highway 66 over I-29/DRAYTON Interchange 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 66 over I-29/DRAYTON Interchange carry?

About 1,830 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Nd Highway 66 over I-29/DRAYTON Interchange?

The structure is 244 ft (74.4 m) long with a longest span of 58 ft (17.7 m) and a deck 43 ft wide.

Who owns Nd Highway 66 over I-29/DRAYTON Interchange?

It is owned by the State Highway Agency.