US Bridges

Csah 50 over Little Sand River

FairPosted for load

Hubbard County, Minnesota · 0.6 MI S of JCT Csah 40 · Structure no. 29510

Built
1976
49 years old
Condition
Fair
inspected September 2023
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
539
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 50 over Little Sand River is a wood or timber slab carrying Csah 50 over Little Sand River in Hubbard County, Minnesota. It was built in 1976, so it is 49 years old, older than the Minnesota average of 38.5 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. Its operating status is: posted for load restriction.

It carries about 539 vehicles a day, projected to reach 355 by 2041. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 50
CrossesLittle Sand River
Location0.6 MI S of JCT Csah 40
RouteCounty Highway 50
Coordinates46.98771, -94.91933
Functional classRural Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.7 US tons
Inventory rating36.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic539 (2021)
Projected traffic355 by 2041
Trucks—
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 Csah 50 over Little Sand River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Csah 50 over Little Sand 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 September 2023.

How much traffic does Csah 50 over Little Sand River carry?

About 539 vehicles per day (2021 count).

How long is Csah 50 over Little Sand River?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns Csah 50 over Little Sand River?

It is owned by the County Highway Agency.