US Bridges

County Highway over I-94/SWEET Briar Sep

Fair

Morton County, North Dakota · 8 East of Nd 31 · Structure no. 0094136143

Built
1964
61 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
245 ft
4 main spans
Daily traffic
30
2019 count
Owner
State
State Highway Agency

About this bridge

County Highway over I-94/SWEET Briar Sep is a prestressed concrete continuous stringer/multi-beam or girder carrying County Highway over I-94/SWEET Briar Sep in Morton County, North Dakota. It was built in 1964, so it is 61 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 30 vehicles a day, projected to reach 30 by 2039. The structure is 245 ft (74.7 m) long and 30 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

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CarriesCounty Highway
CrossesI-94/SWEET Briar Sep
Location8 East of Nd 31
RouteCounty Highway 0
CountyMorton County
StateNorth Dakota
Coordinates46.86204, -101.23929
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating72.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length245 ft (74.7 m)
Longest span66 ft (20.1 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2019)
Projected traffic30 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed36 mi (58 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 County Highway over I-94/SWEET Briar Sep built?

It was built in 1964, making it 61 years old in 2025.

What condition is County Highway over I-94/SWEET Briar Sep 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 April 2023.

How much traffic does County Highway over I-94/SWEET Briar Sep carry?

About 30 vehicles per day (2019 count).

How long is County Highway over I-94/SWEET Briar Sep?

The structure is 245 ft (74.7 m) long with a longest span of 66 ft (20.1 m) and a deck 30 ft wide.

Who owns County Highway over I-94/SWEET Briar Sep?

It is owned by the State Highway Agency.