US Bridges

County Road 136 over S Branch Little Heart Rv

Fair

Morton County, North Dakota · 3 West of ST Anthony · Structure no. 000000030154251

Built
1954
71 years old
Condition
Fair
inspected June 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

County Road 136 over S Branch Little Heart Rv is a concrete channel beam carrying County Road 136 over S Branch Little Heart Rv in Morton County, North Dakota. It was built in 1954, so it is 71 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 100 by 2039. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 136
CrossesS Branch Little Heart Rv
Location3 West of ST Anthony
RouteCounty Highway 3026
CountyMorton County
StateNorth Dakota
Coordinates46.6173, -100.97869
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
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 rating51.3 US tons
Inventory rating30.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic100 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Road 136 over S Branch Little Heart Rv built?

It was built in 1954, making it 71 years old in 2025.

What condition is County Road 136 over S Branch Little Heart Rv 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 County Road 136 over S Branch Little Heart Rv carry?

About 100 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is County Road 136 over S Branch Little Heart Rv?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 23 ft wide.

Who owns County Road 136 over S Branch Little Heart Rv?

It is owned by the County Highway Agency.