US Bridges

Elgin RD over Cannonball River

FairPosted for load

Grant County, North Dakota · 3 South of Elgin · Structure no. 000000019113250

Built
1944
81 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
188 ft
3 main spans
Daily traffic
95
2018 count
Owner
County
County Highway Agency

About this bridge

Elgin RD over Cannonball River is a steel stringer/multi-beam or girder carrying Elgin RD over Cannonball River in Grant County, North Dakota. It was built in 1944, so it is 81 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. Its operating status is: posted for load restriction.

It carries about 95 vehicles a day, roughly 10% of them trucks, projected to reach 250 by 2038. The structure is 188 ft (57.3 m) long and 22 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesElgin RD
CrossesCannonball River
Location3 South of Elgin
RouteCounty Highway 1911
CountyGrant County
StateNorth Dakota
Coordinates46.36153, -101.83012
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.7 US tons
Inventory rating14.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length188 ft (57.3 m)
Longest span65 ft (19.8 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2018)
Projected traffic250 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$489,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Elgin RD over Cannonball River built?

It was built in 1944, making it 81 years old in 2025.

What condition is Elgin RD over Cannonball 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 June 2024.

How much traffic does Elgin RD over Cannonball River carry?

About 95 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is Elgin RD over Cannonball River?

The structure is 188 ft (57.3 m) long with a longest span of 65 ft (19.8 m) and a deck 22 ft wide.

Who owns Elgin RD over Cannonball River?

It is owned by the County Highway Agency.