US Bridges

Nd Highway 1804 over Beaver Bay

Fair

Emmons County, North Dakota · 2 South 14 West Linton · Structure no. 1804027200

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
304 ft
3 main spans
Daily traffic
230
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 1804 over Beaver Bay is a steel continuous stringer/multi-beam or girder carrying Nd Highway 1804 over Beaver Bay in Emmons County, North Dakota. It was built in 1969, so it is 56 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 230 vehicles a day, roughly 9% of them trucks, projected to reach 222 by 2039. The structure is 304 ft (92.7 m) long and 26 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesNd Highway 1804
CrossesBeaver Bay
Location2 South 14 West Linton
RouteState Highway 1804
CountyEmmons County
StateNorth Dakota
Coordinates46.24355, -100.52542
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.
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 protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length304 ft (92.7 m)
Longest span114 ft (34.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2019)
Projected traffic222 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Nd Highway 1804 over Beaver Bay built?

It was built in 1969, making it 56 years old in 2025.

What condition is Nd Highway 1804 over Beaver Bay 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 2023.

How much traffic does Nd Highway 1804 over Beaver Bay carry?

About 230 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Nd Highway 1804 over Beaver Bay?

The structure is 304 ft (92.7 m) long with a longest span of 114 ft (34.7 m) and a deck 26 ft wide.

Who owns Nd Highway 1804 over Beaver Bay?

It is owned by the State Highway Agency.