US Bridges

County Highway 138 over Beaver Creek

FairPosted for load

Morton County, North Dakota · 1 WEST&11 South of Hebron · Structure no. 000000030102160

Built
1940
85 years old, rebuilt 1975
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
1 main span
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway 138 over Beaver Creek is a wood or timber stringer/multi-beam or girder carrying County Highway 138 over Beaver Creek in Morton County, North Dakota. It was built in 1940 and reconstructed in 1975, so it is 85 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 75 vehicles a day, projected to reach 101 by 2042. The structure is 41 ft (12.5 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty Highway 138
CrossesBeaver Creek
Location1 WEST&11 South of Hebron
RouteCounty Highway 3018
CountyMorton County
StateNorth Dakota
Coordinates46.7468, -102.06255
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 rating22.3 US tons
Inventory rating14.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic101 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway 138 over Beaver Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1975.

What condition is County Highway 138 over Beaver Creek 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 September 2024.

How much traffic does County Highway 138 over Beaver Creek carry?

About 75 vehicles per day (2022 count).

How long is County Highway 138 over Beaver Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns County Highway 138 over Beaver Creek?

It is owned by the County Highway Agency.