US Bridges

Nd Highway 11 over Wild Rice River

Poor

Sargent County, North Dakota · At Cayuga · Structure no. 0011141391

Built
1951
74 years old
Condition
Poor
inspected June 2023
Type
Tee Beam
Concrete
Length
42 ft
1 main span
Daily traffic
650
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 11 over Wild Rice River is a concrete tee beam carrying Nd Highway 11 over Wild Rice River in Sargent County, North Dakota. It was built in 1951, so it is 74 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 650 vehicles a day, roughly 15% of them trucks, projected to reach 578 by 2039. The structure is 42 ft (12.8 m) long and 32 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

CarriesNd Highway 11
CrossesWild Rice River
LocationAt Cayuga
RouteState Highway 11
Coordinates46.07961, -97.3914
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.4 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2019)
Projected traffic578 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 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 11 over Wild Rice River built?

It was built in 1951, making it 74 years old in 2025.

What condition is Nd Highway 11 over Wild Rice River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does Nd Highway 11 over Wild Rice River carry?

About 650 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is Nd Highway 11 over Wild Rice River?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Nd Highway 11 over Wild Rice River?

It is owned by the State Highway Agency.