US Bridges

Interstate 94 over Legal Drain 14

Fair

Cass County, North Dakota · 8 West of I-29 · Structure no. 0094341391 R

Built
1959
66 years old, rebuilt 1989
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
70 ft
2 main spans
Daily traffic
6,600
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 94 over Legal Drain 14 is a concrete continuous tee beam carrying Interstate 94 over Legal Drain 14 in Cass County, North Dakota. It was built in 1959 and reconstructed in 1989, 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 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 6,600 vehicles a day, roughly 14% of them trucks, projected to reach 6,600 by 2039. The structure is 70 ft (21.3 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesInterstate 94
CrossesLegal Drain 14
Location8 West of I-29
RouteInterstate 94
CountyCass County
StateNorth Dakota
Coordinates46.87744, -96.99672
Functional classRural Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.6 US tons
Inventory rating58.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span31 ft (9.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2019)
Projected traffic6,600 by 2039
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 94 over Legal Drain 14 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1989.

What condition is Interstate 94 over Legal Drain 14 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 June 2024.

How much traffic does Interstate 94 over Legal Drain 14 carry?

About 6,600 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is Interstate 94 over Legal Drain 14?

The structure is 70 ft (21.3 m) long with a longest span of 31 ft (9.4 m) and a deck 43 ft wide.

Who owns Interstate 94 over Legal Drain 14?

It is owned by the State Highway Agency.