US Bridges

County Hiway 2311 over Maple River Branch

Fair

LaMoure County, North Dakota · 2 West 5 South of Edgeley · Structure no. 000000023113240

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Concrete
Length
25 ft
1 main span
Daily traffic
160
2022 count
Owner
County
County Highway Agency

About this bridge

County Hiway 2311 over Maple River Branch is a concrete channel beam carrying County Hiway 2311 over Maple River Branch in LaMoure County, North Dakota. It was built in 1975, so it is 50 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 160 vehicles a day, roughly 14% of them trucks, projected to reach 216 by 2042. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Hiway 2311
CrossesMaple River Branch
Location2 West 5 South of Edgeley
RouteCounty Highway 0
CountyLaMoure County
StateNorth Dakota
Coordinates46.2871, -98.7661
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2022)
Projected traffic216 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Hiway 2311 over Maple River Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is County Hiway 2311 over Maple River Branch 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 October 2023.

How much traffic does County Hiway 2311 over Maple River Branch carry?

About 160 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is County Hiway 2311 over Maple River Branch?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns County Hiway 2311 over Maple River Branch?

It is owned by the County Highway Agency.